================================================================================
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

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

                                    FORM 11-K

         -------------------------------------------------------------
            ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

          [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 2005
                                       OR

        [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934
             FOR THE TRANSITION PERIOD FROM __________ TO __________

                         COMMISSION FILE NUMBER 1-12387

      A. Full title of the plan and address of the plan, if
                 different from that of the issuer named below:

                           THE TENNECO EMPLOYEE STOCK

                      OWNERSHIP PLAN FOR SALARIED EMPLOYEES

     B. Name of issuer of the securities held pursuant to the plan
               and the address of its principal executive office:

                                  TENNECO INC.

                              500 NORTH FIELD DRIVE

                              LAKE FOREST, IL 60045

         -------------------------------------------------------------
================================================================================



THE TENNECO EMPLOYEE STOCK
OWNERSHIP PLAN FOR SALARIED EMPLOYEES

TABLE OF CONTENTS



                                                                            PAGE
                                                                            ----
                                                                         
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM                        1

FINANCIAL STATEMENTS:
   Statements of Net Assets Available for Benefits as of
      December 31, 2005 and 2004                                               2
   Statement of Changes in Net Assets Available for Benefits for the
      Year Ended December 31, 2005                                             3
   Notes to Financial Statements                                             4-8

SUPPLEMENTAL SCHEDULE:
   Form 5500, Schedule H, Part IV, Line 4i--
      Schedule of Assets (Held at End of Year) as of December 31, 2005         9


NOTE: All other schedules required by Section 2520.103-10 of the Department of
      Labor's Rules and Regulations for Reporting and Disclosure under the
      Employee Retirement Income Security Act of 1974 have been omitted because
      they are not applicable.



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Trustees and Participants of
The Tenneco Employee Stock Ownership Plan for Salaried Employees:

We have audited the accompanying statements of net assets available for benefits
of The Tenneco Employee Stock Ownership Plan for Salaried Employees (the "Plan")
as of December 31, 2005 and 2004, and the related statement of changes in net
assets available for benefits for the year ended December 31, 2005. These
financial statements are the responsibility of the Plan's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. The Plan is not required to have,
nor were we engaged to perform, an audit of its internal control over financial
reporting. Our audits included consideration of internal control over financial
reporting as a basis for designing audit procedures that are appropriate in the
circumstances, but not for the purpose of expressing an opinion on the
effectiveness of the Plan's internal control over financial reporting.
Accordingly, we express no such opinion. An audit also includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, such financial statements present fairly, in all material
respects, the net assets of the Plan at December 31, 2005 and 2004, and the
changes in net assets available for benefits for the year ended December 31,
2005 in conformity with accounting principles generally accepted in the United
States of America.

Our audits were conducted for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule of assets (held
at end of year) as of December 31, 2005 is presented for the purpose of
additional analysis and is not a required part of the basic financial
statements, but is supplementary information required by the Department of
Labor's Rules and Regulations for Reporting and Disclosure under the Employee
Retirement Income Security Act of 1974. This schedule is the responsibility of
the Plan's management. Such schedule has been subjected to the auditing
procedures applied in our audit of the basic 2005 financial statements and, in
our opinion, is fairly stated in all material respects when considered in
relation to the basic financial statements taken as a whole.

Deloitte & Touche LLP

Chicago, Illinois
June 29, 2006






THE TENNECO EMPLOYEE STOCK
OWNERSHIP PLAN FOR SALARIED EMPLOYEES

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
AS OF DECEMBER 31, 2005 AND 2004



                                                      2005           2004
                                                  ------------   ------------
                                                           
ASSETS:
   Participant-directed investments (Note 3)      $155,266,722   $147,601,296
   Nonparticipant-directed investments (Note 4)     42,889,067     41,165,769
                                                  ------------   ------------
      Total investments                            198,155,789    188,767,065
                                                  ------------   ------------

LIABILITIES:
   Accrued administrative expenses                      37,500         35,750
                                                  ------------   ------------
      Total liabilities                                 37,500         35,750
                                                  ------------   ------------
NET ASSETS AVAILABLE FOR BENEFITS                 $198,118,289   $188,731,315
                                                  ============   ============


See notes to financial statements.


                                       -2-


THE TENNECO EMPLOYEE STOCK
OWNERSHIP PLAN FOR SALARIED EMPLOYEES

STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
FOR THE YEAR ENDED DECEMBER 31, 2005


                                                            
ADDITIONS:
   Contributions:
      Participant contributions                                $  9,087,563
      Employer contributions                                      3,447,110
      Rollovers                                                   1,318,184
                                                               ------------
         Total contributions                                     13,852,857
                                                               ------------
   Investment income:
      Net appreciation in fair value of investments (Note 3)     10,070,195
      Dividend                                                    3,149,638
      Interest                                                      929,955
                                                               ------------
         Net investment income                                   14,149,788
                                                               ------------
   Transfers into Plan (Note 2)                                     334,467
                                                               ------------
         Total additions                                         28,337,112
                                                               ------------
DEDUCTIONS:
   Benefits paid to participants                                 18,900,024
   Administrative expenses                                           50,114
                                                               ------------
         Total deductions                                        18,950,138
                                                               ------------
INCREASE IN NET ASSETS                                            9,386,974

NET ASSETS AVAILABLE FOR BENEFITS:
   Beginning of year                                            188,731,315
                                                               ------------
   End of year                                                 $198,118,289
                                                               ============


See notes to financial statements.


                                       -3-



THE TENNECO EMPLOYEE STOCK
OWNERSHIP PLAN FOR SALARIED EMPLOYEES

NOTES TO FINANCIAL STATEMENTS
AS OF DECEMBER 31, 2005 AND 2004, AND FOR THE YEAR ENDED DECEMBER 31, 2005

1.   DESCRIPTION OF THE PLAN

     The following description of The Tenneco Employee Stock Ownership Plan for
     Salaried Employees (the "Plan") is provided for general information
     purposes only. Participants should refer to the Plan Document for more
     complete information.

     GENERAL -- The Plan is a defined contribution plan covering substantially
     all salaried employees of Tenneco Inc. (the "Company"). The Company
     controls and manages the operation and administration of the Plan. Putnam
     Fiduciary Trust Company serves as the trustee of the Plan. The Plan is
     subject to the provisions of the Employee Retirement Income Security Act of
     1974 ("ERISA").

     ELIGIBILITY -- Employees are eligible to participate in the Plan the first
     day of the month following the Company's receipt of an application for
     enrollment or two complete calendar months of employment provided the
     employee has not waived automatic enrollment.

     CONTRIBUTIONS -- An employee is automatically enrolled in the Plan upon
     completion of the eligibility requirements at a pretax contribution rate of
     four percent of pretax annual compensation, as defined in the Plan
     Document, subject to certain Internal Revenue Code limitations, unless the
     employee elects to waive automatic enrollment prior to the effective date.
     Participants can elect to increase the pretax deferral rate, subject to
     certain Internal Revenue Code limitations, from four percent up to 100
     percent, in any whole percentage, at any time.

     The Company's matching contribution is 50 percent of the participant's
     contributions, not to exceed eight percent of the participant's base
     compensation. Additional amounts may be contributed at the discretion of
     the Company. No such additional discretionary contributions were made for
     the year ended December 31, 2005. Participants may also rollover amounts
     from other qualified plans.

     Effective January 1, 2002, Company matching contributions are made in cash.
     Prior to January 1, 2002, Company matching contributions were made in the
     Company's common stock to the Tenneco Inc. Common Stock Fund. All Company
     matching contributions of Company common stock made prior to January 1,
     2002 and the related earnings/losses, will remain in the form of the
     Company's common stock until the participant reaches age 55 or terminates
     employment and requests a total distribution.

     PARTICIPANT ACCOUNTS -- Individual accounts are maintained for each Plan
     participant. Each participant's account is credited with the participant's
     contribution, the Company's matching contribution, and allocations of
     Company discretionary contributions and Plan earnings, and charged with
     withdrawals and an allocation of Plan losses and administrative expenses.
     Allocations are based on participant earnings or account balances, as
     defined. The benefit to which a participant is entitled is the benefit that
     can be provided from the participant's vested account.


                                       -4-



     INVESTMENTS -- Participants direct the investment of their contributions
     and the Company's matching contributions into various investment options
     offered by the Plan. The Plan currently offers participants the option to
     invest their contribution into the following funds: Putnam Money Market
     Fund, Putnam Bond Index Fund, Lord Abbett Mid Cap Value Fund, Lord Abbett
     Small Cap Value Fund, PIMCO Total Return Fund, Putnam Equity Income Fund,
     The George Putnam Fund of Boston, Fidelity Growth Company Fund, Fidelity
     Low-Priced Stock Fund, BBH Inflation Index Securities Fund, MSIF Mid Cap
     Growth Value Portfolio, MSIF Inc. Small Company Growth Value Fund, Putnam
     Retirement Ready Maturity Fund, Putnam Retirement Ready 2010, Putnam
     Retirement Ready 2015, Putnam Retirement Ready 2020, Putnam Retirement
     Ready 2025, Putnam Retirement Ready 2030, Putnam Retirement Ready 2035,
     Putnam Retirement Ready 2040, Putnam Retirement Ready 2045, Putnam
     Retirement Ready 2050, Putnam Income Fund, Putnam Limited Duration
     Government Inc. Fund CL A, Putnam International Equity Fund, Putnam New
     Opportunities Fund, Putnam Research Fund, Putnam S&P 500 Index Fund, and
     Tenneco Inc. Common Stock Fund.

     Shares of Pactiv Corporation common stock are held by the Plan in a
     separate fund due to a transfer of participant account balances from
     another defined contribution plan in 2000, however; the fund is no longer
     an investment option for participants and direct contributions or fund
     transfers are not allowed.

     VESTING -- Participants are vested immediately in both their contributions
     plus actual earnings thereon and the Company's matching contribution
     portion of their accounts.

     PARTICIPANT LOANS -- Active participants and certain other individuals who
     have not had a loan during the previous three months may borrow from their
     accounts up to a maximum of $50,000 less their highest outstanding loan
     balance in the previous 12 months or 50 percent of their account balance,
     whichever is less. Each participant may only have one loan outstanding at
     any time, with a term not to exceed 54 months and the amount of the loan
     may not be less than $1,000. The loans are secured by the balance in the
     participant's account and bear interest at rates equal to the prime rate as
     reported in The Wall Street Journal (ranging from 4.00% to 9.50% at
     December 31, 2005) at the time the loan is made. Principal and interest is
     paid ratably through payroll deductions.

     TERMINATION OF PARTICIPATION -- Prior to March 28, 2005, upon termination
     of service due to death, disability, retirement, or termination of
     employment, a participant was permitted to elect either to receive a
     lump-sum amount equal to the value of the participant's vested interest in
     his or her account, or to maintain the account, if the participant's vested
     interest in the account was more than $5,000. A quarterly installment
     option was available only to former participants of a merged plan. If the
     participant's account was less than $5,000, the participant was required to
     receive a lump-sum amount or roll over the amount to another qualified plan
     or IRA. At December 31, 2004, the amount owed to participants whose service
     has been terminated was $72,706, for accounts with balances less than
     $5,000. Effective March 28, 2005, Tenneco amended the Plan to reduce the
     mandatory lump-sum payout requirement from $5,000 to $1,000. As a result,
     at December 31, 2005 the amount owed to participants whose service had been
     terminated with account balances less than $1,000 was $12,132.

2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     BASIS OF ACCOUNTING -- The accompanying financial statements have been
     prepared in accordance with accounting principles generally accepted in the
     United States of America.

     USE OF ESTIMATES -- The preparation of financial statements in conformity
     with accounting principles generally accepted in the United States of
     America requires Plan management to make estimates and assumptions that
     affect the reported amounts of net assets available for benefits and
     changes therein. Actual results could differ from those estimates. The Plan
     utilizes various investment instruments.


                                       -5-



     Investment securities, in general, are exposed to various risks, such as
     interest rate, credit, and overall market volatility. Due to the level of
     risk associated with certain investment securities, it is reasonably
     possible that changes in the values of investment securities will occur in
     the near term and that such changes could materially affect the amounts
     reported in the financial statements.

     INVESTMENT VALUATION AND INCOME RECOGNITION -- Quoted market prices are
     used to determine the fair value of the Plan's investments, when available.
     Shares of registered investment companies and common/collective trusts are
     valued at the net asset value of shares held by the Plan at year-end.
     Participant loans are valued at the outstanding loan balances.

     Purchases and sales of securities are recorded on a trade-date basis.
     Interest income is recorded on the accrual basis. Dividends are recorded on
     the ex-dividend date.

     Management fees and operating expenses charged to the Plan for investments
     in registered investment companies sponsored by the Company's trustee,
     Putnam Fiduciary Trust Company, are deducted from income earned on a daily
     basis and are not separately reflected. Consequently, these management fees
     and operating expenses are reflected as a reduction of net appreciation
     (depreciation) in the fair market value of investments for such
     investments.

     ADMINISTRATIVE EXPENSES -- Administrative expenses of the Plan are paid by
     the Plan as provided in the Plan Document.

     PAYMENT OF BENEFITS -- Benefit payments to participants, including deemed
     distributions of participant loans, are recorded upon distribution. The
     amount allocated to accounts of persons who have elected to withdraw from
     the Plan but have not yet been paid were $12,132 and $72,706 at December
     31, 2005 and 2004, respectively. There were deemed distributions of
     participant loans in default of $61,036 and $32,412 at December 31, 2005
     and 2004, respectively.

      TRANSFERS -- The Company also sponsors an employee stock ownership plan
      for hourly employees. If employees change their hourly or salaried status
      during the year, their account balances are transferred into the
      corresponding plan. For the year ended December 31, 2005, plan transfers
      received from the hourly plan were $287,488 and loans rolled over from
      Gabilan were $46,979.

3.   INVESTMENTS

     The Plan's investments that represented five percent or more of the Plan's
     net assets available for benefits as of December 31, 2005 and 2004 are as
     follows:



                                      2005          2004
                                  -----------   -----------
                                          
Fidelity Growth Company Fund      $23,913,027   $23,319,716
Pactiv Corporation common stock       **         11,421,119
Putnam Money Market Fund           28,019,494    30,385,051
Putnam S&P 500 Index Fund          15,437,130    15,422,344
Tenneco Inc. common stock*         58,821,889    54,781,945


*    Partially nonparticipant-directed.
**   Less than five percent.


                                       -6-



     During 2005, the Plan's investments (including gains and losses on
     investments bought and sold, as well as held during the year) appreciated
     in value as follows:


                                             
Registered investment companies                 $ 4,049,381
Common/collective trusts                            756,175
Pactiv Corporation common stock                  (1,507,840)
Tenneco Inc. common stock                         6,772,479
                                                -----------
Net appreciation in fair value of investments   $10,070,195
                                                ===========


4.   NONPARTICIPANT-DIRECTED INVESTMENTS

     Information about the net assets and the significant components of the
     changes in net assets relating to the nonparticipant-directed investments
     is as follows as of December 31, 2005 and 2004, and for the year ended
     December 31, 2005:



                                   2005          2004
                               -----------   -----------
                                       
Net assets:
   Tenneco Inc. common stock   $42,889,067   $41,165,769




                                                       YEAR ENDED
                                                   DECEMBER 31, 2005
                                                   -----------------
                                                
Changes in net assets:
   Net appreciation in fair value of investments      $ 4,911,957
   Benefits paid to participants                       (2,419,332)
   Transfers to participant-directed investments         (769,327)
                                                      -----------
Total                                                 $ 1,723,298
                                                      ===========


5.   RELATED-PARTY TRANSACTIONS

     Certain Plan investments are shares of registered investment companies and
     common/collective trusts managed by Putnam Fiduciary Trust Company. Putnam
     Fiduciary Trust Company is the trustee as defined by the Plan and,
     therefore, these transactions qualify as party-in-interest transactions.
     Fees paid by the Plan for investment management services were included as a
     reduction of the return earned on each of these funds.

     At December 31, 2005 and 2004, the Plan held 2,999,586 and 3,177,607
     shares, respectively, of common stock of Tenneco Inc., the sponsoring
     employer, with a cost basis of $16,849,026 and $15,104,321, respectively.


                                       -7-



6.   PLAN TERMINATION

     Although it has not expressed any intention to do so, the Company has the
     right under the Plan to discontinue its contributions at any time and to
     terminate the Plan subject to the provisions set forth in ERISA. Any assets
     which are not allocated to the accounts of participants upon the complete
     termination of the Plan, or complete discontinuance of contributions, will
     be allocated among all of the participant accounts pro rata on the basis of
     their respective balances.

7.   FEDERAL INCOME TAX STATUS

     The Internal Revenue Service has determined and informed the Company by a
     letter, dated April 30, 2002, that the Plan and related trust, as then
     designed, were in accordance with the applicable sections of the Internal
     Revenue Code. Although the Plan has been amended since receiving the
     determination letter, the Plan administrator and the Plan's tax counsel
     believe that the Plan is currently designed and being operated in
     compliance with the applicable requirements of the Internal Revenue Code
     and is tax-exempt. Therefore, no provision for income taxes has been
     included in the Plan's financial statements.

8.   ACQUISITION OF GABILAN MANUFACTURING COMPANY

     In February 2005, Tenneco Inc acquired substantially all the assets and
     assumed certain related liabilities of Gabilan Manufacturing Inc., a
     privately held company that had developed and manufactured motorcycle
     exhaust systems for Harley-Davidson motorcycles since 1978. The company
     also produced aftermarket muffler kits for Harley-Davidson.

     Employees of Gabilan and the administration of their payroll and benefits
     was assumed by Tenneco on April 1, 2005. At that time, Gabilan employees
     had the opportunity to roll-over their balances in the Gabilan 401(k)
     program into either the Tenneco Employee Stock Ownership Plan for Hourly
     Employees or the Tenneco Employee Stock Ownership Plan for Salaried
     Employees depending on whether the employee was categorized as hourly or
     salaried. Gabilan employees were also allowed to roll-over their 401(k)
     loans as part of the roll-over of their assets. The total rollover into the
     Tenneco Salaried Plan related to Gabilan employees totaled $918,236 for the
     year ended December 31, 2005.

9.   SUBSEQUENT EVENT

     Effective April 1, 2006, the Plan's trustee changed from Putnam Fiduciary
     Trust Company to ACS (Mellon). The assets were transferred to ACS (Mellon)
     on March 24, 2006.

10.  RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

     The following is a reconciliation of net assets available for benefits per
     the financial statements to Form 5500:



                                                                     2005           2004
                                                                 ------------   ------------
                                                                          
Net assets available for benefits per the financial statements   $198,118,289   $188,731,315
Deemed distributions of participant loans                             (61,036)       (32,412)
                                                                 ------------   ------------
Net assets available for benefits per Form 5500                  $198,057,253   $188,698,903
                                                                 ============   ============


     The following is a reconciliation of changes in net assets available for
     benefits per the financial statements for the year ended December 31, 2005
     to Form 5500:


                                                                   
Benefits paid to participants per the financial statements            $18,900,024
Add deemed distributions of participant loans at December 31, 2005         61,036
Less deemed distributions of participant loans at December 31, 2004       (32,412)
                                                                      -----------
Benefits paid to participants per Form 5500                           $18,928,648
                                                                      ===========


                                     ******


                                      -8-


THE TENNECO EMPLOYEE STOCK
OWNERSHIP PLAN FOR SALARIED EMPLOYEES

FORM 5500, SCHEDULE H, PART IV, LINE 4I--SCHEDULE OF ASSETS (HELD AT END OF
YEAR)
AS OF DECEMBER 31, 2005



                                                                     FAIR
                                                       COST          VALUE
                                                   -----------   ------------
                                                           
INVESTMENTS:

Common/collective trusts:
   *Putnam Bond Index Fund                                  **   $  2,792,512
   *Putnam S&P 500 Index Fund                               **     15,437,130

Common stock:
   Pactiv Corporation                                       **      7,862,921
   *Tenneco Inc.                                   $16,849,026     58,821,889

Non-interest-bearing cash                                   **         84,552

Registered investment companies:
   Fidelity Growth Company Fund                             **     23,913,027
   Fidelity Low-Priced Stock Fund                           **      8,155,890
   Lord Abbett Mid Cap Value Fund                           **      8,460,756
   Lord Abbett Small Cap Value Fund                         **      4,617,903
   MSIF Inc. Small Company Growth Value Fund                **      3,816,882
   MSIF Mid Cap Growth Value Portfolio                      **      2,887,969
   PIMCO Total Return Fund                                  **      2,113,271
   BBH Inflation Index Securities Fund                      **      1,350,164
   *Putnam Limited Duration Government Inc. CL A            **        270,079
   *Putnam Equity Income Fund                               **      2,469,649
   *Putnam International Equity Fund                        **      5,340,534
   *Putnam Money Market Fund                                **     28,019,494
   *Putnam New Opportunities Fund                           **      6,385,907
   *Putnam Research Fund                                    **        613,586
   *The George Putnam Fund of Boston                        **      3,648,604
   *Putnam Income Fund                                      **        569,074
   *Putnam Retirement Ready Maturity Fund                   **         94,052
   *Putnam Retirement Ready 2010                            **      1,575,062
   *Putnam Retirement Ready 2015                            **      1,795,295
   *Putnam Retirement Ready 2020                            **        695,401
   *Putnam Retirement Ready 2025                            **      1,101,774
   *Putnam Retirement Ready 2030                            **        757,851
   *Putnam Retirement Ready 2035                            **        627,159
   *Putnam Retirement Ready 2040                            **        258,784
   *Putnam Retirement Ready 2045                            **        391,297
   *Putnam Retirement Ready 2050                            **         14,430


*Participant loans (maturing 2006 to 2010 at
   interest rates of 4.00% to 9.50%)                        **      3,212,891
                                                   -----------   ------------
TOTAL                                              $16,849,026   $198,155,789
                                                   ===========   ============


*    Party in interest.

**   Cost information is not required for participant-directed investments.


                                      -9-


                                   SIGNATURES

THE PLAN - Pursuant to the requirements of the Securities and Exchange Act of
1934, the Tenneco Inc. Benefits Committee has duly caused this annual report to
be signed on its behalf by the undersigned hereunder duly authorized.

                                           THE TENNECO EMPLOYEE
                                           STOCK OWNERSHIP PLAN FOR SALARIED
                                           EMPLOYEES


Date: June 29, 2006                        /s/ RICHARD P. SCHNEIDER
                                           -----------------------------------
                                           RICHARD P. SCHNEIDER
                                           CHAIRMAN OF TENNECO INC.
                                           BENEFITS COMMITTEE



                                INDEX TO EXHIBITS



EXHIBIT
NUMBER   DESCRIPTION
-------  ---------------------------------------------
      
23.1     Consent of Deloitte & Touche LLP