FORM 10-Q

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

       (Mark One)
         [ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

                 For the quarterly period ended MARCH 31, 2005

                                      OR
        [    ]TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934
        For the transition period from____________ to _________________

                       Commission file number:  1-13923

                       WAUSAU-MOSINEE PAPER CORPORATION
              (Exact name of registrant as specified in charter)

                  WISCONSIN                            39-0690900
            (State of incorporation)       (I.R.S. Employer Identification
                                            Number)

                                100 PAPER PLACE
                         MOSINEE, WISCONSIN 54455-9099
                    (Address of principal executive office)

       Registrant's telephone number, including area code: 715-693-4470

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such report), and (2) has been subject to such
filing requirements for the past 90 days.

                              Yes   X      No ____

Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act).
                              Yes   X      No ____

The number of common shares outstanding at April 29, 2005 was 51,695,251.

                       WAUSAU-MOSINEE PAPER CORPORATION

                               AND SUBSIDIARIES

                                     INDEX
                                                                     PAGE NO.
PART I.                      FINANCIAL INFORMATION

         Item 1.                Financial Statements
                                Condensed Consolidated Statements of
                                Operations, Three Months Ended
                                March 31, 2005 (unaudited) and
                                March 31, 2004 (unaudited)                  1

                                Condensed Consolidated Balance
                                Sheets, March 31, 2005 (unaudited)
                                and December 31, 2004 (derived from
                                audited financial statements)               2

                                Condensed Consolidated Statements
                                of Cash Flows, Three Months Ended
                                March 31, 2005 (unaudited) and
                                March 31, 2004 (unaudited)                  3

                                Notes to Condensed Consolidated
                                Financial Statements (unaudited)          3-8

         Item 2.                Management's Discussion and 
                                Analysis of Financial Condition
                                and Results of Operations                9-14

         Item 3.                Quantitative and Qualitative Disclosures
                                About Market Risk                          15

         Item 4.                Controls and Procedures                    15

PART II.    OTHER INFORMATION

         Item 6.                Exhibits                                   16
                                       i



                        PART I.  FINANCIAL INFORMATION

ITEM 1.     FINANCIAL STATEMENTS

Wausau-Mosinee Paper Corporation and Subsidiaries
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

                                                        Three Months Ended
                                                             March 31,
(all amounts in thousands, except per share data)       2005          2004
                                                            
NET SALES                                           $ 267,741     $ 251,815

Cost of products sold                                 244,606       225,117

GROSS PROFIT                                           23,135        26,698

Selling and administrative expenses                    17,527        18,884

OPERATING PROFIT                                        5,608         7,814

Interest expense                                       (2,650)       (2,527)

Other income (expense), net                               115           194

EARNINGS BEFORE INCOME TAXES                            3,073         5,481

Provision for income taxes                              1,137         2,029

NET EARNINGS                                       $    1,936     $   3,452

NET EARNINGS PER SHARE - BASIC                     $     0.04     $    0.07

NET EARNINGS PER SHARE - DILUTED                   $     0.04     $    0.07

Weighted average shares outstanding-basic              51,690        51,617

Weighted average shares outstanding-diluted            51,991        51,805


See Notes to Condensed Consolidated Financial Statements.
                                       1



Wausau-Mosinee Paper Corporation and Subsidiaries
CONDENSED CONSOLIDATED BALANCE SHEETS


(all dollar amounts in thousands)                    MARCH 31,   December 31,
                                                       2005         2004
ASSETS                                              (UNAUDITED)
                                                         
Current assets:
   Cash and cash equivalents                       $   21,741  $   51,914
   Receivables, net                                   106,332      95,731
   Inventories                                        136,166     126,932
   Deferred income taxes                               12,453       8,592
   Other current assets                                 3,884       4,123
      Total current assets                            280,576     287,292

Property, plant and equipment, net                    544,519     551,160
Other assets                                           44,336      43,782

TOTAL ASSETS                                       $  869,431  $  882,234

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
   Current maturities of long-term debt            $      108  $      115
   Accounts payable                                    73,843      74,558
   Accrued and other liabilities                       53,482      73,077
      Total current liabilities                       127,433     147,750

Long-term debt                                        161,630     161,833
Deferred income taxes                                 109,568     105,885
Postretirement benefits                                58,806      57,303
Pension                                                30,865      30,996
Other noncurrent liabilities                           22,083      21,375
      Total liabilities                               510,385     525,142
Stockholders' equity                                  359,046     357,092

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY         $  869,431  $  882,234

See Notes to Condensed Consolidated Financial Statements.
                                       2



Wausau-Mosinee Paper Corporation and Subsidiaries 
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

                                                          Three Months Ended
                                                               March 31,    
(all dollar amounts in thousands)                         2005         2004
                                                             
Net cash (used in) provided by operating activities  ($ 17,118)    $ 14,031 

Cash flows from investing activities:
     Capital expenditures                               (8,633)      (3,937)
                                                                            
Cash flows from financing activities:
     Payment under capital lease obligation                (28)         (28)
     Dividends paid                                     (4,394)      (4,382)
     Proceeds from stock option exercises                    0        1,087 
Cash used in financing activities                       (4,422)      (3,323)

Net (decrease) increase in cash and cash equivalents   (30,173)       6,771
Cash and cash equivalents, beginning of period          51,914       36,305

Cash and cash equivalents, end of period              $ 21,741     $ 43,076

Interest paid-net of amount capitalized               $  5,268     $  5,198
Income taxes paid                                     $  6,578     $    654

See Notes to Condensed Consolidated Financial Statements.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

Note 1. The condensed consolidated financial statements include the results of
        Wausau-Mosinee Paper Corporation and our consolidated subsidiaries.
        All significant intercompany transactions have been eliminated.  The
        accompanying condensed financial statements, in the opinion of
        management, reflect all adjustments, which are normal, and recurring in
        nature and which are necessary for a fair statement of the results for
        the periods presented.  Results for the interim period are not
        necessarily indicative of future results.  In all regards, the
        financial statements have been presented in accordance with
        accounting principles generally accepted in the United States of
        America.  Refer to notes to the financial statements, which appear in
        the Annual Report on Form 10-K for the year ended December 31, 2004,
        for the Company's accounting policies and other disclosures, which are
        pertinent to these statements.
                                       3



Note 2. Basic and diluted earnings per share are reconciled as follows:

       (all amounts in thousands, except per share data)         Three Months
                                                                Ended March 31,
                                                               2005        2004
                                                                  
       Net earnings                                        $  1,936     $  3,452

       Basic weighted average common shares outstanding      51,690       51,617
       Dilutive securities:
          Stock compensation plans                              301          187
       Diluted weighted average common shares outstanding    51,991       51,805

       Net earnings per share-basic                       $    0.04     $   0.07
       Net earnings per share-diluted                     $    0.04     $   0.07

       For the three months ended March 31, 2005, options for 567,911 shares
       were excluded from the diluted EPS calculation because the options were
       antidilutive.  For the three months ended March 31, 2004, options for
       465,368 shares were excluded from the diluted EPS calculation because
       the options were antidilutive.  
       
Note 3. Net earnings include provisions, or credits, for stock incentive plans
        calculated by using the average price of the Company's stock at the
        close of each calendar quarter as if all grants under such plans had
        been exercised on that day.  For the three months ended March 31, 2005,
        the credit for incentive plans on a pretax basis was $1.9 million.  For
        the three months ended March 31, 2004, the provision for incentive
        plans on a pretax basis was $0.2 million.

       As permitted under SFAS No. 123, "Accounting for Stock-Based
       Compensation," the Company continues to measure compensation cost for
       stock-option plans using the "intrinsic value based method" prescribed
       under APB No. 25, "Accounting for Stock Issued to Employees."
                                       4

       Pro forma net earnings and earnings per share had the Company elected to
       adopt the "fair-value based method" of SFAS No. 123 are as follows:


      (all dollar amounts in thousands, except per share amounts)   Three Months
                                                                   Ended March 31,
                                                                 2005        2004
                                                                     
      Net earnings:
      As reported                                              $1,936      $3,452
      Add:   Total stock-based employee compensation
             expense (credit) under APB No. 25, net of 
             related tax effects                               (1,196)         96
      Deduct:Total stock-based compensation (expense)
             credit determined under fair-value based method
             for all awards, net of related tax effects         1,050        (140)
      Pro forma                                                $1,790      $3,408

      Net earnings per share - basic:
         As reported                                            $0.04       $0.07
         Pro forma                                              $0.03       $0.07
      Net earnings per share - diluted:
         As reported                                            $0.04       $0.07
         Pro forma                                              $0.03       $0.07

       In December 2004, the Financial Accounting Standards Board ("FASB")
       issued Statement of Financial Accounting Standards No. 123 (revised
       2004), "Share-Based Payment" ("SFAS 123R"), which was to be effective
       for the Company on July 1, 2005.  On April 14, 2005, the Securities and
       Exchange Commission ("SEC") announced the adoption of a rule that defers
       the effective date of 123R.  As a result, the effective date for the
       Company is now January 1, 2006.


Note 4. Accounts receivable consisted of the following:

       (all dollar amounts in thousands)          MARCH 31,  December 31,
                                                    2005         2004
                                                        
       Trade                                      $106,215    $ 95,787
       Other                                         2,178       1,778
                                                   108,393      97,565
       Less: allowances for doubtful accounts       (2,061)     (1,834)
                                                  $106,332    $ 95,731

                                       5



Note 5. The various components of inventories were as follows:

       (all dollar amounts in thousands)           MARCH 31,  December 31,
                                                     2005        2004
                                                       
       Raw materials                              $ 40,457   $  38,247
       Work in process and finished goods           96,984      89,992
       Supplies                                     29,987      28,731
       Inventories at cost                         167,428     156,970
       Less:  LIFO reserve                         (31,262)    (30,038)
                                                  $136,166   $ 126,932

Note 6. The accumulated depreciation on fixed assets was $698.7 million as of
        March 31, 2005, and $685.9 million as of December 31, 2004.  The
        provision for depreciation, amortization and depletion for the three
        months ended March 31, 2005 and March 31, 2004 was $15.3 million and
        $15.0 million, respectively.

Note 7. The components of net periodic benefit costs recognized in the
        Condensed Consolidated Statements of Operations for the three months
        ended March 31, 2005 and 2004 are as follows:


                                                                          Other
                                                                     Post-retirement
                                                 Pension Benefits        Benefits
                                                  2005      2004      2005     2004
                                                                 
       Service cost                             $1,810    $1,720    $  629   $  671
       Interest cost                             2,396     2,423     1,185    1,541
       Expected return on plan assets           (2,708)   (2,501)        0        0
       Amortization of:
         Prior service cost                        549       487      (764)     (87)
         Actuarial loss                            466       419       338      447
         Transition (asset)                          0       (14)        0        0
         Settlement                                305         0         0        0
       Net periodic benefit cost                $2,818    $2,534    $1,388   $2,572

       The company previously disclosed in its consolidated financial
       statements for the year ended December 31, 2004, that although it does
       not have a minimum funding requirement for defined benefit pension plans
       in 2005, it may elect to make contributions of up to $16.0 million to
       pension plans.  As of March 31, 2005, the Company has made payments of
       $2.2 million to its pension plans.  In addition, as previously reported,
       the Company expects to contribute $4.1 million directly to post-
       retirement plans.  As of March 31, 2005, the Company has contributed
       $0.9 million to its post-retirement plans.
                                       6
Note 8. Interim Segment Information

       The Company has reclassified certain prior-year interim segment
       information to conform to the 2005 presentation.  The reclassification
       is the result of a change in the management of two converting facilities
       from the Printing & Writing segment to the Specialty Products segment.  

      FACTORS USED TO IDENTIFY REPORTABLE SEGMENTS
      The Company's operations are classified into three principal reportable
      segments:  Specialty Products, Printing & Writing, and Towel & Tissue,
      each providing different products.  Separate management of each segment
      is required because each business unit is subject to different marketing,
      production, and technology strategies. 

      PRODUCTS FROM WHICH REVENUE IS DERIVED
      Specialty Products produces specialty papers at its manufacturing
      facilities in Rhinelander, Wisconsin; Mosinee, Wisconsin; and Jay, Maine.
      Specialty Products also includes two converting facilities that produce
      laminated roll wrap and related specialty finishing and packaging
      products. Printing & Writing produces a broad line of premium printing
      and writing grades at manufacturing facilities in Brokaw, Wisconsin;
      Groveton, New Hampshire; and Brainerd, Minnesota.  Printing & Writing
      also includes a converting facility which converts printing and writing
      grades.  Towel & Tissue produces a complete line of towel and tissue
      products that are marketed along with soap and dispensing systems for the
      "away-from-home" market.  Towel & Tissue operates a paper mill in
      Middletown, Ohio, and a converting facility in Harrodsburg, Kentucky.
                                       7
       RECONCILIATIONS
       The following are reconciliations to corresponding totals in the
       accompanying consolidated financial statements:


                                                            Three Months
                                                           Ended March 31,
       (all dollar amounts in thousands)                 2005         2004
                                                            
       Net sales external customers:
         Specialty Products                           $118,364    $114,137 
         Printing & Writing                             92,604      86,895 
         Towel & Tissue                                 56,773      50,783 
                                                      $267,741    $251,815 
       Operating profit (loss): 
         Specialty Products                           $  3,940    $  4,983 
         Printing & Writing                            (4,569)       1,019 
         Towel & Tissue                                  7,884       5,301 
         Corporate & eliminations                      (1,647)      (3,489)
                                                      $  5,608    $  7,814 



                                                      MARCH 31,  December 31,
                                                        2005         2004
                                                             
         Specialty Products                           $344,857     $342,724
         Printing & Writing                            292,290      281,378
         Towel & Tissue                                172,023      171,080
         Corporate & Unallocated*                       60,261       87,052
                                                      $869,431     $882,234

       *  Segment assets do not include intersegment accounts receivable, cash,
          deferred tax assets and certain other assets, which are not
          identifiable with segments.

                                       8

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

OVERVIEW

Net earnings for the first quarter of 2005 were $1.9 million or $0.04 per share
compared to prior-year net earnings of $3.5 million or $0.07 per share.  Net
earnings for the first three months of 2005 included after-tax losses of $3.2
million, or $0.06 per share, related to the operation of the Printing & Writing
segment's mill in Brainerd, Minnesota, which was acquired in October 2004.
Also unfavorably impacting the current quarter were significant energy,
freight, fiber and other raw material cost increases.  Despite business
conditions that have softened from late 2004, first quarter 2005 net sales
increased over the same period of 2004 in all three of the Company's business
segments.  Effective with the first quarter of 2005, the Specialty Products
business segment includes the results from two of the Company's converting
facilities, which were previously included in the Printing & Writing business
segment. As a result, the Company has reclassified certain prior-year interim
segment information to conform to the 2005 presentation.


OPERATIONS REVIEW

Net Sales   
                                                 Three Months Ended March 31,
(all dollar amounts in thousands)                    2005           2004
                                                           
Net sales                                         $267,741       $251,815
Percent increase                                         6%             5%

Consolidated net sales of $267.7 million for the three months ended March 31,
2005 improved 6% over consolidated net sales of $251.8 million for the three
months ended March 31, 2004.  Shipments increased approximately 3% quarter-
over-quarter with 221,235 tons shipped during the first quarter of 2005 and
215,248 tons shipped during the first quarter of 2004.  During the same
comparative periods, average net selling price improved nearly 4%, or
approximately $9 million with actual product selling price increases offsetting
a slight decline in product mix.

Specialty Products' net sales for the first quarter of 2005 were $118.4
million, an increase of 4% over net sales of $114.1 million reported during the
same period in 2004.  The increase in net sales was driven by an average net
selling price increase of nearly 6% or approximately $6 million, with actual
selling price increases generating three-quarters of the improvement.
Partially offsetting the improvement in average selling price was a 2%
reduction in volume of products shipped.  In the first three months of 2005,
the business segment shipped 104,788 tons compared to 106,635 tons in the first
quarter of 2004.  The decline is due primarily to reduced current year volumes
of laminated roll wrap product.

For the three months ended March 31, 2005, Printing & Writing recorded net
sales of $92.6 million, an increase of 7% over reported net sales in the first
three months of 2004 of $86.9 million.  The current quarter improvement in net
sales was due to a 10% increase in volume as 80,160 tons were shipped during
the first quarter of 2005 compared to 73,190 tons during the first quarter of
2004.  The improvement in shipment tons quarter-over-quarter was somewhat
                                       9

offset by a decline in average net selling price of approximately 3%.  The
decrease in average net selling price is principally due to the commodity-
oriented product mix produced and shipped from the Brainerd mill.  Actual
product selling prices increased less than 2% as compared with last year as
inconsistent demand for uncoated freesheet papers has made it difficult to
increase selling prices.

Towel & Tissue reported net sales of $56.8 million for the three-month period
ended March 31, 2005, an increase of 12% from net sales of $50.8 million
reported in the same three-month period of 2004.  Shipments of higher-margin
value added products increased 6% in the current quarter as total shipments
increased 2% to 36,287 tons from 35,423 tons during the same period last year.
Average net selling price increased 10%, or more than $5 million, in the first
quarter of 2005 over the first quarter of 2004 with modest mix improvement
adding to the more significant pricing gains experienced in this business
segment.


Gross Profit
                                                  Three Months Ended March 31,
(all dollar amounts in thousands)                      2005         2004
                                                            
Gross profit on sales                                $23,135      $26,698
Gross profit margin                                       9%          11%

Gross profit for the three months ended March 31, 2005, was $23.1 million
compared to $26.7 million for the three months ended March 31, 2004.  Gross
profit margins decreased compared to those reported in the same period last
year as increases in energy, fiber-related costs and losses at Printing &
Writing's newly acquired Brainerd mill more than offset improvements in average
net selling price.  In total, natural gas prices increased approximately 20%
resulting in an additional cost of $2.0 million in the first quarter of 2005
compared to the first quarter of 2004 while electricity costs increased $1.1
million in the same comparative period.  In addition, market pulp prices
increased $46 per air-dried metric ton, or approximately $5.2 million, pulpwood
prices were more than 17% higher, or $1.3 million, linerboard increased $1.3
million, or approximately 24 %, and purchased towel and tissue parent roll
prices increased nearly 9%, or $1.0 million.  Brainerd mill results unfavorably
impacted gross profit margin by 2 percentage points in the first quarter of
2005.

The list price of northern bleached softwood kraft increased $30 per air-dried
metric ton during the first quarter of 2005 after a $30 per air-dried metric
ton increase late in the fourth quarter of 2004. During this period, the list
price of most other market pulps have moved higher by comparable amounts. Some
market pulp producers of northern bleached softwood kraft have recently
announced a $30 per air-dried metric ton price decrease effective May 1, 2005.

The Specialty Products' average selling price increase, improved operations and
cost-reduction efforts were more than offset by the unfavorable impacts of
energy, market pulp and linerboard to report quarter-over quarter gross profit
margins of 8% in the first quarter of 2005 compared to 10% in the first quarter
of 2004.

Printing & Writing's gross profit margin for the first quarter of 2005 was 2%
of net sales compared to 8% of net sales for the first quarter of 2004.  In
addition to the unfavorable impacts
                                       10

of energy and market pulp prices described in the consolidated comparison, the
Printing & Writing business segment absorbed operational losses of $5.1 million
incurred at the Brainerd mill which was acquired in October 2004.  Difficulties
in ramping-up production at the mill resulted in higher than expected losses
during Brainerd's first full quarter of operation.  These difficulties
unfavorably impacted both manufacturing throughput and the ability to produce
a profitable mix of products.

The gross profit margin for Towel & Tissue was 21% in the first quarter of 2005
compared to 19% in the first quarter of 2004.  Increased average selling price
and improved operations more than offset unfavorable purchased towel and tissue
parent roll and energy prices to drive the improvement in gross margin on a
quarter-over-quarter basis.

Consolidated order backlogs decreased to approximately 38,700 tons at March 31,
2005, from approximately 44,400 tons at March 31, 2004.  Backlog tons at March
31, 2005 represent $46.9 million in sales compared to $51.2 million in sales at
March 31, 2004. Improvements in customer backlog were evident in Printing &
Writing, while Specialty Products' customer backlogs declined and Towel &
Tissue's backlogs remained flat quarter-over-quarter.  Specialty Products'
backlog tons declined from 34,400 tons as of March 31, 2004, to 24,000 tons at
March 31, 2005.  Printing & Writing backlog tons improved to 11,800 tons at the
end of the first quarter of 2005 compared to 7,100 tons at the end of the first
quarter of 2004.  Towel & Tissue experienced similar backlogs with 2,900 tons
reported at the end of the first quarter of 2005 and 2004, respectively.  The
change in customer order backlogs does not necessarily indicate business
conditions as a large portion of orders are shipped directly from inventory
upon receipt and do not impact backlog numbers.


Selling and Administrative Expenses
                                                    Three Months Ended March 31,
(all dollar amounts in thousands)                       2005         2004
                                                             
Selling and administrative expense                    $17,527      $18,884
Percent increase/(decrease)                                (7%)         16%
As a percent of net sales                                   7%           7%

Selling and administrative expenses in the first quarter of 2005 were $17.5
million compared to $18.9 million in the same period of 2004.  Incentive
compensation programs based on the market price of the Company's stock resulted
in a credit of $1.9 million for the three months ended March 31, 2005 compared
to a provision of $0.2 million for the three months ended March 31, 2004.
Partially offsetting the impact of the first quarter credit were administrative
costs associated with the Brainerd mill and consulting expenses.  
                                       11


Other Income and Expense
                                                   Three Months Ended March 31,
(all dollar amounts in thousands)                        2005         2004
                                                              
Interest expense                                       $2,650       $2,527
Other income(expense), net                                115          194


Interest expense was similar between comparable periods of 2005 and 2004 at
$2.6 million.  Long-term debt was $161.6 million and $162.0 million at March
31, 2005 and 2004, respectively.  Long-term debt at December 31, 2004, was
$161.8 million.  Interest expense in 2005 is expected to be similar to 2004
levels.  Other income in the first quarter of 2005 is lower than the same
period last year due to reduced interest income as a result of lower cash and
cash equivalent balances in the current period.


Income Taxes
                                                   Three Months Ended March 31,
(all dollar amounts in thousands)                        2005         2004
                                                              
Provision for income taxes                             $1,137       $2,029
Effective tax rate                                         37%          37%

The effective tax rates for the periods presented are indicative of the
Company's normalized tax rate.  The effective rate for 2005 is expected to
remain at 37%.

On October 22, 2004, the American Jobs Creation Act of 2004 (the "Act") was
signed into law.  The Act contains $137 billion in tax cuts over a ten year
period beginning in 2005, which are mainly U.S. manufacturing businesses and
multinational companies.  The Company has not yet completed its assessment of
how the Act might impact its future results of operations or cash flows. 

LIQUIDITY AND CAPITAL RESOURCES 


Cash Flows and Capital Expenditures
                                                  Three Months Ended March 31,
(all dollar amounts in thousands)                       2005         2004
                                                             
Cash (used in) provided by operating activities      ($17,118)     $14,031
Capital expenditures                                    8,633        3,937

For the three months ended March 31, 2005, cash used in operating activities
was $17.1 million compared to cash provided by operating activities of $14.0
million for same period in 2004.  In the first quarter of 2005, receivables and
inventories increased a combined $19.8 million while accounts payable, accrued
income taxes, and other liabilities decreased approximately $12.5 million. For
the three months ended March 31, 2004, receivables and inventories increased a
combined $11.0 million.  This use of cash was somewhat offset by a nearly $9.0
million increase in accounts payable, accrued income taxes and other
liabilities.  While both the first quarter of 2005 and 2004 reflect seasonal
builds in receivables and inventories, inventories in the first quarter of 2005
increased approximately $8.0 million more than the first quarter of 2004 in
order
                                       12
to support the requirements of the Brainerd mill, acquired during the
fourth quarter of 2004, and the Company's growing towel and tissue business
segment. 

The Company has established an average internal rate of return target of 17% on
all capital projects approved in 2005.  This objective was achieved on projects
approved during the first three months of the year.  Capital spending for the

first three months of 2005 was $8.6 million compared to $3.9 million during the
first three months of 2004.  Total capital spending for the full-year of 2005
is expected to be between $40 million and $50 million.

For 2005, capital expenditures for projects with total spending expected to
exceed $1.0 million occurred in Towel & Tissue with $0.3 million spent on
various converting lines.  

The balance of spending for the first three months of 2005 was related to
projects that individually are expected to cost less than $1.0 million.  These
expenditures included approximately $5.7 million for essential non-or low-
return projects, and approximately $2.6 million on projects expected to provide
a return on investment that exceeds the Company's cost of capital.

For the first quarter of 2004, capital expenditures for projects with total
spending expected to exceed $1.0 million occurred at Printing & Writing's
Brokaw mill with $0.6 million spent on a digester replacement project.  In
addition, Towel & Tissue spent $0.1 million on a screw press project and $0.4
million spent for various converting lines.  The balance of the spending in the
first three months of 2004 was on projects that individually were under $1.0
million.  These expenditures included approximately $1.7 million for essential
non or low-return projects, and approximately $1.1 million on projects expected
to provide a return on investment that exceeded the Company's cost of capital.

The Company recently announced its intent to sell approximately 12,000 acres of
timberlands, generating expected after-tax earnings of $16 million, or $0.31
per share, over the next three years.  The timberlands identified for sale are
not considered strategic sources of supply for the Company's pulp mills.


Debt and Equity
                                                    MARCH       December 31,
(all dollar amounts in thousands)                   2005           2004
                                                        
Short-term debt                                 $      108    $       115
Long-term debt                                     161,630        161,833
Total debt                                         161,738        161,948
Stockholders' equity                               359,046        357,092
Total capitalization                               520,784        519,040
Long-term debt/capitalization ratio                    31%            31%

As of March 31, 2005, there was no significant change in total debt as compared
to December 31, 2004.  
                                       13
On March 31, 2005, the Company had approximately $100 million available
borrowing capacity under a bank facility that expires on August 31, 2008.  The
Company's cash position and borrowing capacity is expected to provide
sufficient liquidity to support operations, meet capital spending requirements,
fund dividend payments to shareholders, and pursue a plan to repurchase shares
of the Company's common stock.

Early in the second quarter of 2005, the Company announced its intent to
reactivate its common stock buy-back program.  A total of 2.6 million shares
remain available for repurchase through authorizations approved by the Board of
Directors in 1998 and 2000.  Repurchases may be made from time to time in the
open market or through privately negotiated transactions.

Dividends

On December 17, 2004, the Board of Directors declared a quarterly cash dividend
of $0.085 per common share.  The dividend was paid on February 15, 2005, to
shareholders of record on February 1, 2005.  On April 21, 2005, the Board of
Director's declared a cash dividend in the amount of $0.085 per share.  The
dividend is payable on May 16, 2005, to shareholders of record on May 2, 2005.
                                       14
INFORMATION CONCERNING FORWARD LOOKING STATEMENTS

This report contains certain of management's expectations and other forward-
looking information regarding the Company pursuant to the safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995. While the
Company believes that these forward-looking statements are based on reasonable
assumptions, such statements are not guarantees of future performance, and all
such statements involve risk and uncertainties that could cause actual results
to differ materially from those contemplated in this report. The assumptions,
risks, and uncertainties relating to the forward-looking statements in this
report include general economic and business conditions, changes in the prices
of raw materials or energy, competitive pricing in the markets served by the
Company as a result of economic conditions, overcapacity in the industry and
the demand for paper products, manufacturing problems at Company facilities and
various other risks and assumptions. These and other assumptions, risks, and
uncertainties are described under the caption "Cautionary Statement Regarding
Forward-Looking Information" in Item 1 of the Company's Annual Report on Form
10-K for the year ended December 31, 2004, and from time to time, in the
Company's other filings with the Securities and Exchange Commission. The
Company assumes no obligation to update or supplement forward-looking
statements that become untrue because of subsequent events.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

There has been no material change in the information provided in response to
Item 7A of the Company's Form 10-K for the year ended December 31, 2004.

ITEM 4.  CONTROLS AND PROCEDURES

As of the end of the period covered by this report, management, under the
supervision, and with the participation, of the Company's President and Chief
Executive Officer and the Chief Financial Officer, evaluated the effectiveness
of the design and operation of the Company's disclosure controls and procedures
pursuant to Rule 13a-15 under the Securities Exchange Act of 1934.  Based upon,
and as of the date of such evaluation, the President and Chief Executive
Officer and the Chief Financial Officer concluded that the Company's disclosure
controls and procedures were effective in all material respects.  There have
been no significant changes in the Company's internal controls or in other
factors during the period covered by this report which could significantly
affect internal controls, nor were there any significant deficiencies or
material weaknesses identified which required any corrective action to be
taken.
                                       15

                          PART II.  OTHER INFORMATION


ITEM 6.  EXHIBITS

Exhibits required by Item 601 of Regulation S-K

31.1  Certification of CEO pursuant to Section 302 of Sarbanes-Oxley Act of
      2002
31.2  Certification of CFO pursuant to Section 302 of Sarbanes-Oxley Act of
      2002
32.1  Certification of CEO and CFO pursuant to Section 906 of Sarbanes-Oxley
      Act of 2002
                                       16

                                  SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                    WAUSAU-MOSINEE PAPER CORPORATION



May 10, 2005                        SCOTT P. DOESCHER
                                    Scott P. Doescher
                                    Senior Vice President-Finance,
                                    Secretary and Treasurer

                                    (On behalf of the Registrant and as
                                    Principal Financial Officer)


                                 EXHIBIT INDEX
                                      TO
                                   FORM 10-Q
                                      OF
                       WAUSAU-MOSINEE PAPER CORPORATION
                 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2005
                 Pursuant to Section 102(d) of Regulation S-T
                        (17 C.F.R. Section 232.102(d))

The following exhibits are filed as part of this report:

31.1   Certification of CEO pursuant to Section 302 of Sarbanes-Oxley Act of
       2002
31.2   Certification of CFO pursuant to Section 302 of Sarbanes-Oxley Act of
       2002
32.1   Certification of CEO and CFO pursuant to Section 906 of Sarbanes-Oxley
       Act of 2002
                                       17