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


                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                                (Amendment No.)*

                                  TENNECO INC.
                                  ------------
                                (Name of Issuer)

                     Common Stock, Par Value $0.01 Per Share
                     ---------------------------------------
                         (Title of Class of Securities)

                                    880349105
                                    ---------
                                 (CUSIP Number)

                                 April 21, 2008
                                 --------------
                      (Date of Event which Requires Filing
                               of this Statement)



Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

              [ ]      Rule 13d-1(b)
              [X]      Rule 13d-1(c)
              [ ]      Rule 13d-1(d)



*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 the
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 8





-------------------                                           ------------------
CUSIP No. 880349105                   13G                     Page 2 of 8 Pages
-------------------                                           ------------------

---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           S.A.C. Capital Advisors, LLC
---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                      (a) [ ]
                                                                      (b) [X]
---------- ---------------------------------------------------------------------
        3  SEC USE ONLY

---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
--------------------- ----- ----------------------------------------------------
                         5  SOLE VOTING POWER

                            0
NUMBER OF             ----- ----------------------------------------------------
SHARES                   6  SHARED VOTING POWER
BENEFICIALLY
OWNED                       2,147,118 (see Item 4)
BY                    ----- ----------------------------------------------------
EACH                     7  SOLE DISPOSITIVE POWER
REPORTING
PERSON                      0
WITH                  ----- ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            2,147,118 (see Item 4)
---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           2,147,118 (see Item 4)
---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           [ ]
---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           4.6% (see Item 4)
---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
---------- ---------------------------------------------------------------------
                       *SEE INSTRUCTION BEFORE FILLING OUT


                                  Page 2 of 8





-------------------                                           ------------------
CUSIP No. 880349105                   13G                     Page 3 of 8 Pages
-------------------                                           ------------------

---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           S.A.C. Capital Management, LLC
---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                      (a) [ ]
                                                                      (b) [X]
---------- ---------------------------------------------------------------------
        3  SEC USE ONLY

---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
--------------------- ----- ----------------------------------------------------
                         5  SOLE VOTING POWER

                            0
NUMBER OF             ----- ----------------------------------------------------
SHARES                   6  SHARED VOTING POWER
BENEFICIALLY
OWNED                       2,147,118 (see Item 4)
BY                    ----- ----------------------------------------------------
EACH                     7  SOLE DISPOSITIVE POWER
REPORTING
PERSON                      0
WITH                  ----- ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            2,147,118 (see Item 4)
---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           2,147,118 (see Item 4)
---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           [ ]
---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           4.6% (see Item 4)
---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
---------- ---------------------------------------------------------------------
                       *SEE INSTRUCTION BEFORE FILLING OUT


                                  Page 3 of 8





-------------------                                           ------------------
CUSIP No. 880349105                   13G                     Page 4 of 8 Pages
-------------------                                           ------------------

---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           Steven A. Cohen
---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                      (a) [ ]
                                                                      (b) [X]
---------- ---------------------------------------------------------------------
        3  SEC USE ONLY

---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           United States
--------------------- ----- ----------------------------------------------------
                         5  SOLE VOTING POWER

                            0
NUMBER OF             ----- ----------------------------------------------------
SHARES                   6  SHARED VOTING POWER
BENEFICIALLY
OWNED                       2,147,118 (see Item 4)
BY                    ----- ----------------------------------------------------
EACH                     7  SOLE DISPOSITIVE POWER
REPORTING
PERSON                      0
WITH                  ----- ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            2,147,118 (see Item 4)
---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           2,147,118 (see Item 4)
---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           [ ]
---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           4.6% (see Item 4)
---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           IN
---------- ---------------------------------------------------------------------
                       *SEE INSTRUCTION BEFORE FILLING OUT


                                  Page 4 of 8





Item 1(a)           Name of Issuer:
                    --------------

                    Tenneco Inc.

Item 1(b)           Address of Issuer's Principal Executive Offices:
                    -----------------------------------------------

                    500 North Field Drive, Lake Forest, IL 60045

Items 2(a)          Name of Person Filing:
                    ---------------------

                    This statement is filed by: (i) S.A.C. Capital Advisors, LLC
                    ("SAC Capital Advisors") with respect to shares of common
                    stock, par value $0.01 per share ("Shares"), of the Issuer
                    beneficially owned by S.A.C. Capital Associates, LLC ("SAC
                    Capital Associates") and S.A.C. Select Fund, LLC ("SAC
                    Select Fund"); (ii) S.A.C. Capital Management, LLC ("SAC
                    Capital Management") with respect to Shares beneficially
                    owned by SAC Capital Associates and SAC Select Fund; and
                    (iii) Steven A. Cohen with respect to Shares beneficially
                    owned by SAC Capital Advisors, SAC Capital Management, SAC
                    Capital Associates and SAC Select Fund.

                    SAC Capital Advisors, SAC Capital Management, and Steven A.
                    Cohen have entered into a Joint Filing Agreement, a copy of
                    which is filed with this Schedule 13G as Exhibit 99.1,
                    pursuant to which they have agreed to file this Schedule 13G
                    jointly in accordance with the provisions of Rule 13d-1(k)
                    of the Securities Exchange Act of 1934, as amended.

Item 2(b)           Address of Principal Business Office:
                    ------------------------------------

                    The address of the principal business office of (i) SAC
                    Capital Advisors and Mr. Cohen is 72 Cummings Point Road,
                    Stamford, Connecticut 06902, and (ii) SAC Capital Management
                    is 540 Madison Avenue, New York, New York 10022.

Item 2(c)           Citizenship:
                    -----------

                    SAC Capital Advisors and SAC Capital Management are Delaware
                    limited liability companies. Mr. Cohen is a United States
                    citizen.

Item 2(d)           Title of Class of Securities:
                    ----------------------------

                    Common Stock, par value $0.01 per share

Item 2(e)           CUSIP Number:
                    ------------

                    880349105

Item 3              Not Applicable


                                   Page 5 of 8





Item 4              Ownership:
                    ---------

                    The percentages used herein are calculated based upon the
                    Shares issued and outstanding as of February 22, 2008 as
                    reported on the Issuer's annual report on Form 10-K filed
                    with the Securities and Exchange Commission by the Issuer
                    for the fiscal year ended December 31, 2007.

                    As of the close of business on April 30, 2008:

                    1. S.A.C. Capital Advisors, LLC
                    (a) Amount beneficially owned: 2,147,118
                    (b) Percent of class: 4.6%
                    (c)(i) Sole power to vote or direct the vote: -0-
                    (ii) Shared power to vote or direct the vote: 2,147,118
                    (iii) Sole power to dispose or direct the disposition: -0-
                    (iv) Shared power to dispose or direct the disposition:
                    2,147,118

                    2. S.A.C. Capital Management, LLC
                    (a) Amount beneficially owned: 2,147,118
                    (b) Percent of class: 4.6%
                    (c)(i) Sole power to vote or direct the vote: -0-
                    (ii) Shared power to vote or direct the vote: 2,147,118
                    (iii) Sole power to dispose or direct the disposition: -0-
                    (iv) Shared power to dispose or direct the disposition:
                    2,147,118

                    3. Steven A. Cohen
                    (a) Amount beneficially owned: 2,147,118
                    (b) Percent of class: 4.6%
                    (c)(i) Sole power to vote or direct the vote: -0-
                    (ii) Shared power to vote or direct the vote: 2,147,118
                    (iii) Sole power to dispose or direct the disposition: -0-
                    (iv) Shared power to dispose or direct the disposition:
                    2,147,118

                    SAC Capital Advisors, SAC Capital Management, and Mr. Cohen
                    own directly no Shares. Pursuant to investment management
                    agreements, each of SAC Capital Advisors and SAC Capital
                    Management share all investment and voting power with
                    respect to the securities held by SAC Capital Associates and
                    SAC Select Fund. Mr. Cohen controls each of SAC Capital
                    Advisors and SAC Capital Management. By reason of the
                    provisions of Rule 13d-3 of the Securities Exchange Act of
                    1934, as amended, each of SAC Capital Advisors, SAC Capital
                    Management, and Mr. Cohen may be deemed to own beneficially
                    2,147,118 Shares (constituting approximately 4.6% of the
                    Shares outstanding). Each of SAC Capital Advisors, SAC
                    Capital Management, and Mr. Cohen disclaim beneficial
                    ownership of any of the securities covered by this
                    statement.


                                  Page 6 of 8





Item 5              Ownership of Five Percent or Less of a Class:
                    --------------------------------------------

                    If this statement is being filed to report the fact that as
                    of the date hereof the reporting person has ceased to be the
                    beneficial owner of more than five percent of the class of
                    securities, check the following. [X]

Item 6              Ownership of More than Five Percent on Behalf of Another
                    --------------------------------------------------------
                    Person:
                    ------

                    Not Applicable

Item 7              Identification and Classification of the
                    ----------------------------------------
                    Subsidiary Which Acquired the Security Being
                    --------------------------------------------
                    Reported on By the Parent Holding Company:
                    -----------------------------------------

                    Not Applicable

Item 8              Identification and Classification of Members
                    --------------------------------------------
                    of the Group:
                    ------------

                    Not Applicable

Item 9              Notice of Dissolution of Group:
                    ------------------------------

                    Not Applicable

Item 10             Certification:
                    -------------

     By signing below the signatory certifies that, to the best of his knowledge
and belief, the securities referred to above were not acquired and are not held
for the purpose of or with the effect of changing or influencing the control of
the issuer of the securities and were not acquired and are not held in
connection with or as a participant in any transaction having that purpose or
effect.


                                  Page 7 of 8





                                    SIGNATURE
                                    ---------

     After reasonable 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: May 1, 2008

S.A.C. CAPITAL ADVISORS, LLC


By: /s/ Peter Nussbaum
   -------------------------------
Name:   Peter Nussbaum
Title:  Authorized Person



S.A.C. CAPITAL MANAGEMENT, LLC


By: /s/ Peter Nussbaum
   -------------------------------
Name:   Peter Nussbaum
Title:  Authorized Person



STEVEN A. COHEN


By: /s/ Peter Nussbaum
   -------------------------------
Name:   Peter Nussbaum
Title:  Authorized Person


                                  Page 8 of 8