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

                                  SCHEDULE 13D

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


                  Fidelity National Information Services, Inc.
--------------------------------------------------------------------------------
                                (NAME OF ISSUER)


                     Common Stock, par value $.01 per share
--------------------------------------------------------------------------------
                         (TITLE OF CLASS OF SECURITIES)

                                   31620M 10 6
                                 (CUSIP NUMBER)

                               David Spuria, Esq.
                               Texas Pacific Group
                         301 Commerce Street, Suite 3300
                              Fort Worth, TX 76102
                                 (817) 871-4000

                                 WITH COPIES TO:
                               James Westra, Esq.
                           Weil, Gotshal & Manges LLP
                               100 Federal Street
                                   34th Floor
                                Boston, MA 02110
                                 (617) 772-8300
--------------------------------------------------------------------------------
          ( NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO
                       RECEIVE NOTICES AND COMMUNICATIONS)


                                February 1, 2006
--------------------------------------------------------------------------------
             (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 that is the subject of this Schedule 13D, and is filing this
schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), 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 ss.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).

                                   Page 1 of 9



------------------------------ --------------------------------------- ------------ ----------------------------------------------
    CUSIP No. 31620M 10 6                                                  13D                        Page 2 of 9
------------------------------ --------------------------------------- ------------ ----------------------------------------------
                 
----------------------------------------------------------------------------------------------------------------------------------
        1           NAME OF REPORTING PERSON:                          TPG ADVISORS III, INC.
                    I.R.S. IDENTIFICATION NO.                                       [  ]
                    OF ABOVE PERSON (ENTITIES ONLY):
------------------- --------------------------------------------------------------------------------------------- ----------------
        2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:                                                     (A) [_]
                                                                                                                          (B) [X]
------------------- --------------------------------------------------------------------------------------------------------------
        3           SEC USE ONLY

------------------- ------------------------------- ------------------------------------------------------------------------------
        4           SOURCE OF FUNDS:                OO

------------------- --------------------------------------------------------------------------------------------- ----------------
        5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e):                   [_]
------------------- -------------------------------------------------- -----------------------------------------------------------
        6           CITIZENSHIP OR PLACE OF ORGANIZATION:              DELAWARE

------------------------------ ------- -------------------------------------------- ----------------------------------------------
          NUMBER OF              7     SOLE VOTING POWER:                           1,134,533
           SHARES
                               ------- -------------------------------------------- ----------------------------------------------
        BENEFICIALLY             8     SHARED VOTING POWER:                         13,256,464 (SEE ITEM 5)
          OWNED BY
                               ------- -------------------------------------------- ----------------------------------------------
            EACH                 9     SOLE DISPOSITIVE POWER:                      1,134,533
          REPORTING
                               ------- -------------------------------------------- ----------------------------------------------
         PERSON WITH             10    SHARED DISPOSITIVE POWER:                    13,256,464 (SEE ITEM 5)

------------------- --------------------------------------------------------------- ----------------------------------------------
        11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY REPORTING PERSON:        14,390,997 (SEE ITEM 5)

------------------- --------------------------------------------------------------------------------------------- ----------------
        12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES:                                    [ ]

------------------- --------------------------------------------------------------------------------------------- ----------------
        13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):                                           7.5%

------------------- -------------------------------------------------- -----------------------------------------------------------
        14          TYPE OF REPORTING PERSON:                          CO

------------------- -------------------------------------------------- -----------------------------------------------------------





                                  Page 2 of 9

------------------------------ --------------------------------------- ------------ ----------------------------------------------
    CUSIP No. 31620M 10 6                                                  13D                        Page 3 of 9
------------------------------ --------------------------------------- ------------ ----------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------
        1           NAME OF REPORTING PERSON:                          TPG ADVISORS IV, INC.
                    I.R.S. IDENTIFICATION NO.                                       [  ]
                    OF ABOVE PERSON (ENTITIES ONLY):
------------------- --------------------------------------------------------------------------------------------- ----------------
        2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:                                                     (A) [_]
                                                                                                                          (B) [X]
------------------- --------------------------------------------------------------------------------------------------------------
        3           SEC USE ONLY

------------------- ------------------------------- ------------------------------------------------------------------------------
        4           SOURCE OF FUNDS:                OO

------------------- --------------------------------------------------------------------------------------------- ----------------
        5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e):                   [_]
------------------- -------------------------------------------------- -----------------------------------------------------------
        6           CITIZENSHIP OR PLACE OF ORGANIZATION:              DELAWARE

------------------------------ ------- -------------------------------------------- ----------------------------------------------
          NUMBER OF              7     SOLE VOTING POWER:                           -0-
           SHARES
                               ------- -------------------------------------------- ----------------------------------------------
        BENEFICIALLY             8     SHARED VOTING POWER:                         13,256,464 (SEE ITEM 5)
          OWNED BY
                               ------- -------------------------------------------- ----------------------------------------------
            EACH                 9     SOLE DISPOSITIVE POWER:                      -0-
          REPORTING
                               ------- -------------------------------------------- ----------------------------------------------
         PERSON WITH             10    SHARED DISPOSITIVE POWER:                    13,256,464 (SEE ITEM 5)

------------------- --------------------------------------------------------------- ----------------------------------------------
        11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY REPORTING PERSON:        13,256,464 (SEE ITEM 5)

------------------- --------------------------------------------------------------------------------------------- ----------------
        12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES:                                    [ ]

------------------- --------------------------------------------------------------------------------------------- ----------------
        13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):                                           6.9%

------------------- -------------------------------------------------- -----------------------------------------------------------
        14          TYPE OF REPORTING PERSON:                          CO

------------------- -------------------------------------------------- -----------------------------------------------------------






                                  Page 3 of 9

                                  SCHEDULE 13D
                                  ------------

         ITEM 1.  SECURITY AND ISSUER

         The class of equity to which this Statement on Schedule 13D (this
"Schedule 13D") relates is common stock, par value $.01 per share, of Fidelity
National Information Services, Inc. ("FIS Common Stock")

         Fidelity National Information Services, Inc. (formerly known as Certegy
Inc.) ("FIS" or the "Company") is a Georgia corporation with its principal
executive offices located at 601 Riverside Avenue, Jacksonville, FL 32204.

         ITEM 2.  IDENTITY AND BACKGROUND.

         (a), (b) and (c)

         This Schedule 13D is being filed jointly on behalf of the following
persons (collectively, the "Reporting Persons"): TPG Advisors III, Inc., a
Delaware corporation ("Advisors III") and TPG Advisors IV, Inc., a Delaware
corporation ("Advisors IV").

         The address of each of the Reporting Persons is 301 Commerce Street,
Suite 3300, Fort Worth, Texas 76102.

         The principal business of each of the Reporting Persons is serving as
the sole general partner of related entities engaged in making investments in
securities of public and private corporations.

         The name, residence or business address, and present principal
occupation or employment of each director, executive officer and controlling
person of each of the Reporting Persons are described on Schedule I hereto.

         Except as otherwise indicated on Schedule I hereto, each of the
Reporting Persons and the individuals referred to on Schedule I hereto is a
United States citizen.

         (d) and (e)

         During the last five years, none of the Reporting Persons nor, to the
best knowledge of the Reporting Persons, any person named in Schedule I, has
been (a) convicted in a criminal proceeding (excluding traffic violations or
similar misdemeanors) or (b) a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
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.


                                  Page 4 of 9

         ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         Advisors III acquired 14,390,997 shares of FIS Common Stock on February
1, 2006 pursuant to the Agreement and Plan of Merger, dated as of September 14,
2005, by and among Certegy Inc., a Georgia corporation ("Certegy"), C Co Merger
Sub, LLC, a Delaware limited liability company and a direct wholly owned
subsidiary of Certegy ("Merger Co") and Fidelity National Information Services,
Inc., a Delaware corporation ("FIS DE") (the "Merger Agreement"). Pursuant to
the Merger Agreement, FIS DE was merged with and into Merger Co (the "Merger").
Immediately following the Merger, Certegy was renamed "Fidelity National
Information Services, Inc." In connection with the Merger, each share of FIS DE
common stock issued and outstanding immediately prior to the effective time of
the Merger automatically converted into the right to receive 0.6396 shares of
FIS Common Stock. The Reporting Persons held 23,536,000 shares of common stock
of FIS DE that were converted into the 14,390,997 shares of FIS Common Stock on
February 1, 2006.

         The description of the Merger Agreement in this Schedule 13D is
qualified in its entirety by reference to such agreement, which is included as
an Exhibit hereto and incorporated by reference herein.

         ITEM 4.  PURPOSE OF TRANSACTION.

         The Reporting Persons acquired 14,390,997 shares, in the aggregate, of
FIS Common Stock as merger consideration for the shares of common stock of FIS
DE that the Reporting Persons owned prior to the Merger. All of the shares of
FIS Common Stock held by the Reporting Persons were acquired primarily for
investment purposes. Each of the Reporting Persons intends to monitor its
investment in FIS on an ongoing basis and to take such measures as it deems
appropriate from time to time in furtherance of such interests. Each of the
Reporting Persons may from time to time acquire additional FIS Common Stock,
dispose of some or all of the shares of FIS Common Stock then beneficially owned
by it, discuss FIS's business, operations, or other affairs with FIS's
management, board of directors, shareholders or others, explore an extraordinary
corporate transaction, such as a sale, merger, reorganization or liquidation
involving FIS or take such other actions similar to those enumerated above or as
such Reporting Person may deem appropriate. Notwithstanding the foregoing,
except as described in this Item 4 and in Item 6, none of the Reporting Persons
has any present plan or proposal which relate to or would result in any of the
matters referred to in Items (a) through (j) of Item 4 of Schedule 13D of the
Securities and Exchange Commission. Each Reporting Person does, however, reserve
the right to adopt such plans or proposals subject to compliance with applicable
regulatory requirements.

         As further described in Item 6 below, the Reporting Persons became
parties to a Shareholders Agreement, dated September 14, 2005, among FIS, the
Reporting Persons and the other shareholders of FIS DE (the "Shareholders
Agreement"), in connection with the Merger, which grants the Reporting Persons
(collectively) the right to designate one individual who will serve as a member
of the board of directors of FIS. Marshall Haines has been designated by the
Reporting Persons to the board of directors of FIS.


                                  Page 5 of 9

         ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

         TPG Parallel III, L.P., TPG Investors III, L.P., FOF Partners III,
L.P., FOF Partners III-B and TPG Dutch Parallel III, C.V. (collectively, the
"TPG III Funds") collectively own 1,134,533 shares of FIS Common Stock directly,
and TPG FNIS Holdings, LLC ("TPG FNIS") owns 13,256,464 shares of FIS Common
Stock directly. Because of Advisors III's position as (i) the general partner of
TPG GenPar III, L.P., which is the general partner of each of the TPG III Funds
and the sole managing member of TPG GenPar Dutch LLC, which is the general
partner of TPG Dutch Parallel III, C.V. and (ii) one of the managing members of
TPG FNIS, Advisors III may be deemed to beneficially own in the aggregate
14,390,997 shares of FIS Common Stock. Because of Advisor IV's position as the
general partner of TPG GenPar IV, L.P., which is one of the managing members of
TPG FNIS, Advisors IV may be deemed to beneficially own 13,256,464 shares of FIS
Common Stock.

         By virtue of the relationships among the Reporting Persons described
herein, the Reporting Persons may be deemed to share beneficial ownership with
respect to the 14,390,997 shares of FIS Common Stock reported herein, which
represents approximately 7.5% of the 190,952,288 outstanding shares of FIS
Common Stock as of February 1, 2006.

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

         The information set forth in Items 3, 4, and 5 of this Schedule 13D and
the Exhibits to this Schedule 13D are incorporated by reference herein.

         On September 14, 2005, FIS, the Reporting Persons and the other
shareholders of FIS DE entered into a Shareholders Agreement, which was
conditioned upon the Merger, which provides for, among other things, limitations
on the ability of the Reporting Persons and the other shareholders of FIS DE to
transfer the shares of FIS Common Stock they received in the Merger, to acquire
additional shares of FIS Common Stock, or to cause FIS to engage in a
going-private transaction. The Shareholders Agreement also sets forth agreements
concerning the nomination and election of directors of FIS.

         The description of the Shareholders Agreement in this Schedule 13D is
qualified in its entirety by reference to such agreement, which is included as
an Exhibit hereto and incorporated by reference herein.

         In connection with the Merger, FIS, the Reporting Persons and the other
shareholders of FIS DE entered into a Registration Rights Agreement which
provides the Reporting Persons and the other FIS DE stockholders with the right
to require FIS to register the shares of FIS Common Stock issued to them in the
Merger for resale and the right to participate in registrations that FIS might
undertake (the "Registration Rights Agreement").

         The description of the Registration Rights Agreement in this Schedule
13D is qualified in its entirety by reference to such agreement, which is
included as an Exhibit hereto and incorporated by reference herein.


                                  Page 6 of 9

         ITEM  7.  MATERIAL TO BE FILED AS EXHIBITS.

         1.       Agreement and Plan of Merger, dated as of September 14, 2005,
                  by and among Certegy Inc., a Georgia corporation, C Co Merger
                  Sub, LLC, a Delaware limited liability company and a direct
                  wholly owned subsidiary of Certegy, and Fidelity National
                  Information Services, Inc., a Delaware corporation
                  (incorporated by reference to Exhibit 2.1 of the Certegy Inc.
                  Form 8-K filed September 16, 2005).

         2.       Shareholders Agreement, dated September 14, 2005 among (i)
                  Certegy Inc., a Georgia corporation n/k/a Fidelity National
                  Information Services, Inc., (ii) Fidelity National Financial,
                  Inc., a Delaware corporation, (iii) THL FNIS Holdings, LLC,
                  Thomas H. Lee Equity (Cayman) Fund V, L.P., Thomas H. Lee
                  Investors Limited Partnership, Putnam Investment Holdings,
                  LLC, Putnam Investments Employees' Securities Company I LLC,
                  and Putnam Investments Employees' Securities Company II LLC,
                  (iv) TPG FNIS Holdings, LLC, TPG Parallel III, L.P., TPG
                  Investors III, L.P., FOF Partners III, L.P., FOF Partners
                  III-B, L.P., and TPG Dutch Parallel III, C.V. and (v) Evercore
                  METC Capital Partners II, LLC (incorporated by reference to
                  Exhibit 4.1 of the Certegy Inc. Form 8-K filed September 16,
                  2005).

         3.       Registration Rights Agreement, dated as of February 1, 2006 by
                  and among (i) Fidelity National Information Services, Inc., a
                  Georgia corporation formerly known as Certegy Inc., (ii)
                  Fidelity National Financial, Inc., a Delaware corporation,
                  (iii) THL FNIS Holdings, LLC, Thomas H. Lee Equity (Cayman)
                  Fund V, L.P., Thomas H. Lee Investors Limited Partnership,
                  Putnam Investment Holdings, LLC, Putnam Investments Employees'
                  Securities Company I LLC, and Putnam Investments Employees'
                  Securities Company II LLC, (iv) TPG FNIS Holdings, LLC, TPG
                  Parallel III, L.P., TPG Investors III, L.P., FOF Partners III,
                  L.P., FOF Partners III-B, L.P., and TPG Dutch Parallel III,
                  C.V. and (v) Evercore METC Capital Partners II, LLC
                  (incorporated by reference to Exhibit 99.1 of the Company's
                  Form 8-K filed February 6, 2006).







                                  Page 7 of 9

                                   Signatures
                                   ----------

           After reasonable inquiry and to the best knowledge and belief of each
of the undersigned, such person certifies that the information set forth in this
Statement with respect to such person is true, complete and correct.

                                         Dated: February 6, 2006


                                         TPG ADVISORS III, INC.

                                         By: /s/ DAVID A. SPURIA
                                             ----------------------------------
                                         Name: David A. Spuria
                                         Title: Vice President and Secretary



                                         TPG ADVISORS IV, INC.

                                         By: /s/ DAVID A. SPURIA
                                             ----------------------------------
                                         Name: David A. Spuria
                                         Title: Vice President and Secretary










                                  Page 8 of 9

                                   SCHEDULE I




---------------------------------------- -------------------------------------- --------------------------------------
                 NAME                                  POSITION                           BUSINESS ADDRESS
---------------------------------------- -------------------------------------- --------------------------------------
                                                                          
            DAVID BONDERMAN              CHAIRMAN OF THE BOARD OF DIRECTORS     301 COMMERCE STREET,
                                         AND PRESIDENT OF ADVISORS III AND      SUITE 3300
                                         ADVISORS IV AND DIRECTOR               FORT WORTH, TEXAS 76102
---------------------------------------- -------------------------------------- --------------------------------------
           JAMES G. COULTER              DIRECTOR AND VICE PRESIDENT OF         345 CALIFORNIA STREET
                                         ADVISORS III AND ADVISORS IV           SUITE 3300
                                                                                SAN FRANCISCO, CALIFORNIA 94104
---------------------------------------- -------------------------------------- --------------------------------------
         WILLIAM S. PRICE, III           DIRECTOR AND VICE PRESIDENT OF         345 CALIFORNIA STREET
                                         ADVISORS III AND ADVISORS IV           SUITE 3300
                                                                                SAN FRANCISCO, CALIFORNIA 94104
---------------------------------------- -------------------------------------- --------------------------------------
             JOHN E. VIOLA               VICE PRESIDENT AND TREASURER OF        301 COMMERCE STREET,
                                         ADVISORS III AND ADVISORS IV           SUITE 3300
                                                                                FORT WORTH, TEXAS 76102
---------------------------------------- -------------------------------------- --------------------------------------
            DAVID A. SPURIA              VICE PRESIDENT AND SECRETARY OF        301 COMMERCE STREET,
                                         ADVISORS III AND ADVISORS IV           SUITE 3300
                                                                                FORT WORTH, TEXAS 76102
---------------------------------------- -------------------------------------- --------------------------------------
          THOMAS E. REINHART             VICE PRESIDENT OF ADVISORS III AND     345 CALIFORNIA STREET
                                         ADVISORS IV                            SUITE 3300
                                                                                SAN FRANCISCO, CALIFORNIA 94104
---------------------------------------- -------------------------------------- --------------------------------------
          JONATHAN J. COSLET             VICE PRESIDENT OF ADVISORS III AND     345 CALIFORNIA STREET
                                         ADVISORS IV                            SUITE 3300
                                                                                SAN FRANCISCO, CALIFORNIA 94104
---------------------------------------- -------------------------------------- --------------------------------------
           D. THOMAS KELTNER             CHIEF COMPLIANCE OFFICER AND           301 COMMERCE STREET,
                                         ASSISTANT SECRETARY OF ADVISORS III    SUITE 3300
                                         AND ADVISORS IV                        FORT WORTH, TEXAS 76102
---------------------------------------- -------------------------------------- --------------------------------------
          G. DOUGLAS PUCKETT             ASSISTANT SECRETARY OF ADVISORS III    301 COMMERCE STREET,
                                         AND ADVISORS IV                        SUITE 3300
                                                                                FORT WORTH, TEXAS 76102
---------------------------------------- -------------------------------------- --------------------------------------
           S. MICHELLE REESE             ASSISTANT SECRETARY OF ADVISORS III    301 COMMERCE STREET,
                                         AND ADVISORS IV                        SUITE 3300
                                                                                FORT WORTH, TEXAS 76102
---------------------------------------- -------------------------------------- --------------------------------------





                                  Page 9 of 9