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

                                 SCHEDULE 13D

                 UNDER THE SECURITIES EXCHANGE ACT OF 1934
                              (AMENDMENT NO. 3)


                     International Bancshares Corporation
           --------------------------------------------------------
                                (Name of Issuer)

                          Common Stock, Par Value $1.00
           --------------------------------------------------------
                          (Title of Class of Securities)

                                  459044 103
           --------------------------------------------------------
                                 (CUSIP Number)

                          Cary Plotkin Kavy, Esq.
                         Cox & Smith Incorporated
                      112 E. Pecan Street, Suite 1800
                         San Antonio, Texas 78205
                               (210) 554-5500
           --------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                 JULY 17, 2002
           --------------------------------------------------------
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the following
box / /.

NOTE: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 240.13d-7 for
other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section
of the Act but shall be subject to all other provisions of the Act (however,
see the Notes).



                                 SCHEDULE 13D

CUSIP No. 459044 103                                         Page 2 of 6 Pages
          ----------                                             ---  ---


-------------------------------------------------------------------------------
 (1) NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

     Antonio R. Sanchez, Jr.
-------------------------------------------------------------------------------
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER     (a)  / /
     of a Group*                               (b)  /X/
-------------------------------------------------------------------------------
 (3) SEC Use Only

-------------------------------------------------------------------------------
 (4) Source of Funds*
     N/A
-------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     ITEMS 2(d) or 2(e)    / /
-------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     United States
-------------------------------------------------------------------------------
   Number of                  (7) SOLE VOTING POWER
    Shares                        77,237,218

                             --------------------------------------------------
 Beneficially                 (8) SHARED VOTING POWER
   Owned by                       704,035

                             --------------------------------------------------
     Each                     (9) SOLE DISPOSITIVE POWER
  Reporting                       77,237,218

                             --------------------------------------------------
    Person                   (10) SHARED DISPOSITIVE POWER
     With                         704,035

-------------------------------------------------------------------------------
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     7,941,253
-------------------------------------------------------------------------------
(12) CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

-------------------------------------------------------------------------------
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
     30.85
-------------------------------------------------------------------------------
(14) TYPE OF REPORTING PERSON*
     IN
-------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


                                       2


THIS AMENDMENT NO. 3 TO SCHEDULE 13D (THE "AMENDED STATEMENT") RELATING TO
COMMON STOCK, PAR VALUE $1.00 PER SHARE, OF INTERNATIONAL BANCSHARES
CORPORATION IS FILED AS AN AMENDMENT TO THE ORIGINAL SCHEDULE 13D, AS
AMENDED, OF ANTONIO R. SANCHEZ, JR. (THE "STATEMENT") AND SHOULD BE READ IN
CONJUNCTION THEREWITH.  THE STATEMENT IS AMENDED ONLY TO THE EXTENT PROVIDED
HEREIN.

ITEM 1.  SECURITY AND ISSUER

         This Amended Statement relates to the Common Stock, par value $1.00
per share ("Common Stock"), of International Bancshares Corporation, a Texas
corporation (the "Issuer").  The Common Stock is registered under Section
12(g) of the Securities Exchange Act of 1934.

         The principal executive offices of the Issuer are located at 1200
San Bernardo, Laredo, Texas  78040.

ITEM 2.  IDENTITY AND BACKGROUND

         (a)  This amended statement is being filed by Antonio R. Sanchez,
Jr. ("Mr. Sanchez").

         (b)  Mr. Sanchez's business address is P.O. Box 2986, Laredo, Texas
78044-2986.

         (c)  Mr. Sanchez is employed by Sanchez Oil and Gas Corporation,
whose address is P.O. Box 2986, Laredo, Texas 78044-2986.

         (d)  During the last five years, Mr. Sanchez has not been convicted
in a criminal proceeding (excluding traffic violations or similar
misdemeanors).

         (e)  During the last five years, Mr. Sanchez was not a party to a
civil proceeding of a judicial or administrative body of competent
jurisdiction as a result of which he was or is subject to a judgment, decree
or final order enjoining future violations of, or prohibiting or mandating
activities subject to, federal or state securities laws or finding any
violation with respect to such laws.

         (f)  Mr. Sanchez is a citizen of the United States of America.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

         No material changes.

ITEM 4.  PURPOSE OF TRANSACTION

         On January 29, 2002, Mr. Sanchez sold 128,140 shares of Common Stock
held by him.  Such shares were sold to the Issuer at a price of $42.00 per
share pursuant to the Issuer's share repurchase program.

         On February 8, 2002, 36,295 shares of Common Stock were distributed
from the G.M. Sanchez GRAT Remainder Trust to the G.M. Sanchez 1999 GRAT, of
which Mr. Sanchez is the trustee.

         On March 1, 2002, Mr. Sanchez sold 5,133 shares of Common Stock held
by him.  Such shares were sold to the Issuer at a price of $42.00 per share
pursuant to the Issuer's share repurchase program.

         On March 25, 2002, Mr. Sanchez and Mrs. Alicia M. Sanchez were
removed as co-general partners of the family partnership SANTIG, Ltd., and a
corporation wholly-owned by Mr. Sanchez, and of which he is President and
Chairman of the Board, was named as the new general partner.  As a result,
Mr. Sanchez may be deemed to beneficially own the shares of Common Stock held
by the partnership.


                                       3



         On April 4, 2002, the Issuer declared a 25% stock dividend to
shareholders of record as of May 20, 2002.  As a result, the number of shares
beneficially owned by Mr. Sanchez increased accordingly.

         On June 4, 2002, Mr. Sanchez sold 4,203 shares of Common Stock held
by him.  Such shares were sold to the Issuer at a price of $44.75 per share
pursuant to the Issuer's share repurchase program.

         On July 17, 2002, Mr. Sanchez sold 250,000 shares of Common Stock
held by him.  Such shares were sold to the Issuer at a price of $37.70 per
share pursuant to the Issuer's share repurchase program.

         On July 24, 2002, Mr. Sanchez was appointed executor of the Estate
(the "Estate") of Mrs. Alicia Sanchez ("Mrs. Sanchez"), deceased, mother of
Mr. Sanchez.  As a result, Mr. Sanchez has the sole power to vote or to
direct the vote of and to dispose or direct the disposition of the 2,132,041
shares of Common Stock held by the Estate.  The Estate has filed an amendment
to the Schedule 13D previously filed by Mrs. Sanchez, which amendment
reflects the Estate's beneficial ownership of the Common Stock previously
held by Mrs. Sanchez.  As a result, in addition to the Estate's reporting its
beneficial ownership of the Common Stock pursuant to its amended Schedule
13D, Mr. Sanchez will report the Estate's beneficial ownership of Common
Stock in this Statement for so long as he may be deemed to beneficially own
the same.

         A description of Mr. Sanchez's resulting beneficial ownership, after
giving effect to the foregoing, is set forth in Item 5 below.  The shares
beneficially owned by Mr. Sanchez are held for investment purposes.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER

         (a)  Mr. Sanchez beneficially owns an aggregate of 7,941,253 shares
of Common Stock, which shares represent 31.84% of the outstanding Common
Stock of the Issuer.  The current interest of Mr. Sanchez in the Common Stock
of the Issuer is as follows:



                                                                            Type of
                                              Number of                    Beneficial
                 Holder                        Shares      Percentage      Ownership
                 ------                       ---------    ----------      ----------
                                                                  
A.R. Sanchez, Jr.                             1,609,279        6.25%         Direct
1988 Trust No. 1                                333,379        1.30          Trustee
1988 Trust No. 2                                333,380        1.30          Trustee
1988 Trust No. 3                                333,379        1.30          Trustee
1988 Trust No. 4                                333,379        1.30          Trustee
George M. Sanchez Non-Exempt Trust              179,237        0.70          Trustee
Estate of Alicia M. Sanchez, deceased         2,132,041        8.28          Executor
A.R. Sanchez, Jr. GRAT Remainder Trust          207,848        0.81          Trustee
G.M. Sanchez GRAT Remainder Trust               474,252        1.84          Trustee
G.M. Sanchez 1999 GRAT                           45,368        0.18          Trustee
Kelsey V. Stewart GRAT Remainder Trust          259,812        1.01          Co-Trustee
R.A. Stewart GRAT Remainder Trust               259,812        1.01          Co-Trustee
Santig, Ltd.                                  1,255,676        4.88          Through
                                                                             general
                                                                             partner
Kelsey V. Stewart Exempt Trust                   56,212        0.22          Co-Trustee
Richard A. Stewart Exempt Trust                  56,212        0.22          Co-Trustee
Kelsey V. Stewart Non-exempt Trust               33,400        0.13          Co-Trustee
Richard A. Stewart Non-exempt Trust              33,400        0.13          Co-Trustee
Sanchez Family Foundation                         5,187        0.02          Director

Total                                         7,941,253       30.85%



                                                 4


         (b)  Mr. Sanchez has the sole power to vote or to direct the vote
and to dispose or to direct the disposition of the shares held directly by
him.  Mr. Sanchez has sole power to vote the shares of Common Stock held by
SANTIG, Ltd.  Mr. Sanchez has shared power to vote or to direct the vote and
to dispose or to direct the disposition of the shares held by the Sanchez
Family Foundation and each of the trusts for which he is co-trustee, and he
has sole power to vote or to direct the vote and to dispose or to direct the
disposition of the shares held by each of the trusts for which he is the sole
trustee.

         (c)  During the past sixty days, Mr. Sanchez has not effected any
transactions in the Common Stock except the transactions described in Item 4
above.

         (d)  Except as described above with respect to shares held by any
trust, partnership or foundation, with respect to which various other parties
have the right to receive or the power to direct the receipt of dividends
from, or the proceeds from the sale of, the shares of Common Stock held by
such entity, no other person is known to have the right to receive or the
power to direct the receipt of dividends from, or the proceeds from the sale
of, the shares of Common Stock of the Issuer beneficially owned by Mr. Sanchez.

         (e)  Not applicable.

         The filing of this Statement shall not be construed as an admission
that Mr. Sanchez is the beneficial owner of any securities covered by this
Statement.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDING OR RELATIONSHIPS WITH RESPECT
         TO SECURITIES OF THE ISSUER

         No material changes.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS

         None.

                   [Remainder of page intentionally left blank.]


                                       5



                                 SIGNATURE

After reasonably inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated: July 29, 2002

                                           /s/ ANTONIO R. SANCHEZ, JR.
                                           -------------------------------
                                           ANTONIO R. SANCHEZ, JR.


ATTENTION:  Intentional misstatements or omissions of fact constitute federal
criminal violations.  See 18 U.S.C. 1001.



                                           6