SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                   Under the Securities Exchange Act of 1934*

                                   IHOP Corp.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $0.01 per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    449623107
--------------------------------------------------------------------------------
                      (CUSIP Number of Class of Securities)

                                 Daniel S. Loeb
                                 Third Point LLC
                                 390 Park Avenue
                               New York, NY 10022
                                 (212) 224-7400
--------------------------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                   Copies to:
                            Michael A. Schwartz, Esq.
                          Willkie Farr & Gallagher LLP
                               787 Seventh Avenue
                             New York, NY 10019-6099
                                 (212) 728-8000

                                February 13, 2007
--------------------------------------------------------------------------------
                          (Date of Event which Requires
                            Filing of this Schedule)

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 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 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.449623107                                          Page 2 of 9 Pages
----------------------------------                          --------------------


----------- --------------------------------------------------------------------
    1       NAME OF REPORTING PERSON
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Third Point LLC                                     I.D. #13-3922602
----------- --------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                (a) [ ]
                                                                (b) [X]
----------- --------------------------------------------------------------------
    3       SEC USE ONLY
----------- --------------------------------------------------------------------
    4       SOURCE OF FUNDS*

            AF
----------- --------------------------------------------------------------------
    5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
            ITEMS 2(d) or 2(e)  [ ]

----------- --------------------------------------------------------------------
    6       CITIZENSHIP OR PLACE OF ORGANIZATION

            Delaware
--------------------- --------- ------------------------------------------------
                         7      SOLE VOTING POWER

                                0
                      --------- ------------------------------------------------
                         8      SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED              1,250,000
BY EACH REPORTING     --------- ------------------------------------------------
PERSON WITH              9      SOLE DISPOSITIVE POWER

                                0
                      --------- ------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                1,250,000
----------- --------------------------------------------------------------------
    11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

            1,250,000
----------- --------------------------------------------------------------------
    12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES*     [ ]

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

            7.0%
----------- --------------------------------------------------------------------
    14      TYPE OF REPORTING PERSON*

            OO
----------- --------------------------------------------------------------------







                                      SCHEDULE 13D



----------------------------------                          --------------------
CUSIP No.449623107                                          Page 3 of 9 Pages
----------------------------------                          --------------------


----------- --------------------------------------------------------------------
    1       NAME OF REPORTING PERSON
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Daniel S. Loeb
----------- --------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                (a) [ ]
                                                                (b) [X]
----------- --------------------------------------------------------------------
    3       SEC USE ONLY
----------- --------------------------------------------------------------------
    4       SOURCE OF FUNDS*

            AF
----------- --------------------------------------------------------------------
    5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
            ITEMS 2(d) or 2(e)  [ ]

----------- --------------------------------------------------------------------
    6       CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
--------------------- --------- ------------------------------------------------
                         7      SOLE VOTING POWER

                                0
                      --------- ------------------------------------------------
                         8      SHARED VOTING POWER
NUMBER OF SHARES
BENEFICIALLY OWNED              1,250,000
BY EACH REPORTING     --------- ------------------------------------------------
PERSON WITH              9      SOLE DISPOSITIVE POWER

                                0
                      --------- ------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                1,250,000
----------- --------------------------------------------------------------------
    11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

            1,250,000
----------- --------------------------------------------------------------------
    12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES*     [ ]

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

            7.0%
----------- --------------------------------------------------------------------
    14      TYPE OF REPORTING PERSON*

            IN
----------- --------------------------------------------------------------------






     This Schedule 13D is being filed on behalf of Third Point LLC, a Delaware
limited liability company (the "Management Company"), and Daniel S. Loeb, an
individual ("Mr. Loeb", and together with the Management Company, the "Reporting
Persons"). This Schedule 13D relates to the Common Stock, par value $0.01 per
share, of IHOP Corp., a Delaware corporation (the "Company"). Unless the context
otherwise requires, references herein to the "Common Stock" are to such Common
Stock of the Company. The Management Company is the investment manager or
adviser to a variety of hedge funds and managed accounts (such funds and
accounts, collectively, the "Funds"). The Funds directly own the Common Stock to
which this Schedule 13D relates, and the Reporting Persons may be deemed to have
beneficial ownership over such Common Stock by virtue of the authority granted
to them by the Funds to vote and to dispose of the securities held by the Funds,
including the Common Stock.

Item 1.   Security and Issuer.

     This statement on Schedule 13D relates to the Common Stock of the Company
and is being filed pursuant to Rule 13d-1 under the Securities Exchange Act of
1934, as amended (the "Exchange Act"). The address of the principal executive
offices of the Company is 450 North Brand Boulevard, Glendale, California 91203.

Item 2.   Identity and Background.


     (a) This statement is filed by the Reporting Persons. Daniel S. Loeb is the
chief executive officer of the Management Company and controls the Management
Company's business activities. The Management Company is organized as a limited
liability company under the laws of the State of Delaware.

     (b) The address of the principal business and principal office of the
Management Company and Mr. Loeb is 390 Park Avenue, 18th floor, New York, New
York 10022.

     (c) The principal business of the Management Company is to serve as
investment manager or adviser to the Funds, and to control the investing and
trading in securities of the Funds. The principal business of Mr. Loeb is to act
as the chief executive officer of the Management Company.

     (d) None of the Reporting Persons, nor, to the best of their knowledge, any
of their directors, executive officers, general partners or members has, during
the last five years, been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors).

     (e) None of the Reporting Persons, nor, to the best of their knowledge, any
of their directors, executive officers, general

                                       4


partners or members has, during the last five years, been 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.

     (f) Mr. Loeb is a United States citizen.

Item 3.   Source and Amount of Funds or Other Consideration.

     The Funds expended an aggregate of approximately $61,577,828 of their own
investment capital to acquire the 1,250,000 shares of Common Stock held by them.
The Funds effect purchases of securities primarily through margin accounts
maintained for them with Bear, Stearns Securities Corp. and Goldman, Sachs &
Co., which may extend margin credit to the Funds as and when required to open or
carry positions in the margin accounts, subject to applicable Federal margin
regulations, stock exchange rules and the firm's credit policies. In such
instances, the positions held in the margin accounts are pledged as collateral
security for the repayment of debit balances in the accounts.

Item 4.   Purpose of Transaction.

     The purpose of the acquisition by the Funds of beneficial ownership of the
securities is for investment. The acquisition was effected because of the
Reporting Persons' belief that the Company represents an attractive investment
based on the Company's business prospects. The Reporting Persons are engaged in
the investment business. In pursuing this business, the Reporting Persons
analyze the operations, capital structure and markets of companies, including
the Company, on an ongoing basis through analysis of documentation and
discussions with knowledgeable industry and market observers and with
representatives of such companies (often at the invitation of management).
Depending on prevailing market, economic and other conditions, one or more of
the Reporting Persons may from time to time, among other things, hold
discussions with third parties or with management of such companies (including
the Company) in which the Reporting Persons may suggest or take a position with
respect to potential changes in the operations, strategy, management or capital
structure of such companies as a means of enhancing shareholder value. Such
suggestions or positions may relate to one or more of the transactions specified
in clauses (a) through (j) of Item 4 of Schedule 13D of the Exchange Act,
including, without limitation, such matters as disposing of or selling all or a
portion of the company or acquiring another company or business, changing
operating or marketing strategies, adopting or not adopting certain types of
anti-takeover measures and restructuring the company's capitalization or
dividend

                                       5


policy. The Reporting Persons presently do not have any plans or proposals that
relate to or would result in any of the actions required to be described in Item
4 of Schedule 13D. Each of the Reporting Persons may, at any time, review or
reconsider its position with respect to the Company and formulate plans or
proposals with respect to any of such matters.

     The Reporting Persons intend to review their investment in the Company on a
continuing basis and, depending upon the price and availability of the Company's
securities, subsequent developments concerning the Company, the Company's
business and prospects, other investment and business opportunities available to
the Reporting Persons, general stock market and economic conditions, tax
considerations and other factors considered relevant, may decide at any time
(via the Funds or otherwise) to increase or decrease the size of their
investment in the Company or to sell any or all of the securities of the Company
that they hold.

Item 5.   Interest in Securities of the Issuer.

     (a) As of the date of this Schedule 13D, the Management Company
beneficially owns 1,250,000 shares of Common Stock (the "Shares"). The
Management Company shares voting and dispositive power over such holdings with
Mr. Loeb and with the Funds. The Shares represent 7.0% of the 17,831,963 shares
of Common Stock outstanding as of October 27, 2006, as reported in the Company's
Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2006.
The percentages used herein and in the rest of this statement are calculated
based upon this number of outstanding shares. None of the individual Funds owns
a number of shares of Common Stock representing more than 5% of such total.

     (b) The Management Company and Mr. Loeb share voting and dispositive power
over the 1,250,000 shares of Common Stock beneficially owned by the Funds.

     (c) Schedule A hereto sets forth certain information with respect to
transactions by the Funds, at the direction of the Reporting Persons, in Common
Stock during the past 60 days.

     All of the transactions set forth on Schedule A were effected in open
market transactions on the New York Stock Exchange. Except as set forth above
and on Schedule A, during the last 60 days there were no transactions in the
Common Stock effected by the Reporting Persons nor, to the best of their
knowledge, any of their directors, executive officers, general partners or
members.

                                       6


     (d) Other than the Funds which directly hold the Shares, and except as set
forth in this Item 5, no 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.

     (e) Not applicable.

Item 6.   Contracts, Arrangements, Understandings or Relationships With Respect
          to Securities of the Issuer.

     Pursuant to Rule 13d-1(k) promulgated under the Exchange Act, the Reporting
Persons have entered into an agreement with respect to the joint filing of this
statement, and any amendment or amendments hereto.

     Except as set forth herein, there are no contracts, arrangements,
understandings or relationships among the persons named in Item 2 or between
such persons and any other person with respect to any securities of the Company.

Item 7.   Material to be Filed as Exhibits.

99.1.     Joint Filing Agreement, dated as of February 23, 2007, by and between
          the Reporting Persons.

99.2      Power of Attorney granted by Mr. Daniel S. Loeb in favor of James
          Kelly, Justin Nadler, Zachary Snow and Keith Waller, dated December 1,
          2006.


                         [Signatures on following page]


                                      7






                                   SIGNATURES

     After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.


Dated:  February 23, 2007





                                 THIRD POINT LLC

                                 By: Daniel S. Loeb,
                                     Chief Executive Officer


                                 By:  /s/ Justin Nadler
                                      ------------------------------------------
                                      Name:   Justin Nadler
                                      Title:  Attorney-in-Fact







                                 DANIEL S. LOEB


                                  By:  /s/ Justin Nadler
                                      ------------------------------------------
                                      Name:   Justin Nadler
                                      Title:  Attorney-in-Fact










           [SIGNATURE PAGE TO SCHEDULE 13D WITH RESPECT TO IHOP CORP.]












                                                    Schedule A


                                  (Transactions by the Funds in Common Stock
                                           during the past 60 days)


         Date                   Transaction                       Shares                       Price Per Share($)
         ----                   -----------                       ------                       ------------------
                                                                               
------------------------ ---------------------------- --------------------------------- -----------------------------------

       12/29/06                     SELL                          (9,200)                           52.70
------------------------ ---------------------------- --------------------------------- -----------------------------------

       12/29/06                      BUY                           9,200                            52.70
------------------------ ---------------------------- --------------------------------- -----------------------------------

       01/05/07                     SELL                          (5,300)                           52.21
------------------------ ---------------------------- --------------------------------- -----------------------------------

       01/05/07                      BUY                           5,300                            52.21
------------------------ ---------------------------- --------------------------------- -----------------------------------

       01/31/07                     SELL                          (7,900)                           53.20
------------------------ ---------------------------- --------------------------------- -----------------------------------

       01/31/07                      BUY                           7,900                            53.20
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/07/07                      BUY                           7,500                            53.80
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/07/07                      BUY                            100                             53.43
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/08/07                      BUY                           20,300                           53.85
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/09/07                      BUY                           12,100                           53.53
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/13/07                      BUY                           22,400                           53.48
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/13/07                      BUY                           12,100                           53.50
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/14/07                      BUY                          225,500                           54.01
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/15/07                      BUY                           25,000                           54.72
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/16/07                      BUY                           25,000                           54.63
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/21/07                      BUY                           25,000                           55.22
------------------------ ---------------------------- --------------------------------- -----------------------------------

       02/22/07                      BUY                           25,000                           57.10
------------------------ ---------------------------- --------------------------------- -----------------------------------