UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549


                                    FORM 8-K


                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934



       Date of Report (Date of earliest event reported): October 16, 2006



                                  ADTRAN, Inc.
             (Exact name of registrant as specified in its charter)

        Delaware                    0-24612                     63-0918200
(State of Incorporation)    (Commission file number)         (I.R.S. Employer
                                                         (Identification Number)



             901 Explorer Boulevard, Huntsville, Alabama 35806-2807
          (Address of principal executive offices, including zip code)



                                 (256) 963-8000
              (Registrant's telephone number, including area code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     |_| Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

     |_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
CFR 240.14a-12)

     |_| Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

     |_| Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))



Item 2.02. Results of Operations and Financial Condition.

On October 16, 2006, ADTRAN, Inc. announced its financial results for the third
quarter ended September 30, 2006 and certain other information. ADTRAN also
announced that its Board of Directors declared a quarterly cash dividend. The
quarterly cash dividend is $0.09 per common share to be paid to holders of
record at the close of business on November 2, 2006. The ex-dividend date is
October 31, 2006 and the payment date is November 16, 2006. A copy of ADTRAN's
press release announcing such financial results and other information is
attached as Exhibit 99.1 hereto and incorporated by reference herein.


Item 9.01. Financial Statements and Exhibits.

               (c) Exhibits.

               The following exhibit is furnished as part of this Current Report
               on Form 8-K.



Exhibit Number          Description
--------------          -----------

     99.1               Press Release dated October 16, 2006












                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) 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 on October 16, 2006.

                                           ADTRAN, Inc.
                                           (Registrant)

                                           By: /s/ James E. Matthews
                                               ---------------------------------
                                           James E. Matthews
                                           Senior Vice President - Finance,
                                           Chief Financial Officer and Treasurer










                                  EXHIBIT INDEX

Exhibit Number          Description
--------------          -----------

     99.1               Press Release dated October 16, 2006