SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                ----------------

                                    FORM 11-K

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


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

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2003

                                       OR

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

FOR THE TRANSITION PERIOD FROM                TO

COMMISSION FILE NUMBER 1-15157

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

                    PACTIV 401(k) SAVINGS AND INVESTMENT PLAN

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

                               PACTIV CORPORATION
                              1900 WEST FIELD COURT
                              LAKE FOREST, IL 60045

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                    Pactiv 401(k) Savings and Investment Plan

                 Financial Statements and Supplemental Schedule

                          Year ended December 31, 2003

                                    CONTENTS


                                                                  
Report of Independent Registered Public Accounting Firm ......       1

Financial Statements

Statements of Assets Available for Benefits ..................       2
Statements of Changes in Assets Available for Benefits .......       3
Notes to Financial Statements ................................       4

Supplemental Schedule

Schedule H, Line 4i - Schedule of Assets (Held at End of Year)       7


             Report of Independent Registered Public Accounting Firm

To the Pactiv Corporation Benefits Committee:

We have audited the accompanying statements of assets available for benefits of
the Pactiv 401(k) Savings and Investment Plan as of December 31, 2003, and 2002,
and the related statements of changes in assets available for benefits for the
years then ended. 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. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes 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, the financial statements referred to above present fairly, in
all material respects, the assets available for benefits of the Plan at December
31, 2003 and 2002, and the changes in assets available for benefits for the
years then ended, in conformity with U.S. generally accepted accounting
principles.

Our audits were performed for the purpose of forming an opinion on the basic
financial statements taken as a whole. The accompanying supplemental schedule of
assets (held at end of year) as of December 31, 2003, is presented for purposes
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 supplemental schedule is the
responsibility of the Plan's management. The supplemental schedule has been
subjected to the auditing procedures applied in our audits of the basic
financial statements, and in our opinion, is fairly stated in all material
respects in relation to the basic financial statements taken as a whole.

/s/ Ernst & Young LLP
Chicago, Illinois
May 20, 2004


                                       1

                    Pactiv 401(k) Savings and Investment Plan

                   Statements of Assets Available for Benefits



                                                           DECEMBER 31,
                                                    2003                2002
                                                ------------        ------------
                                                              
ASSETS
Investments, at fair value:
   Common stock                                 $ 67,630,422        $ 60,241,180
   Registered investment companies               100,014,376          65,711,389
   Money market funds                             29,352,865          31,789,379
   Participant loans                               3,330,359           3,178,842
                                                ------------        ------------
Total investments                                200,328,022         160,920,790
Receivables:

   Employer contribution                             300,000             288,968
   Net receivable for pending trades                  32,976              73,771
                                                ------------        ------------
Total receivables                                    332,976             362,739
                                                ------------        ------------
Assets available for benefits                   $200,660,998        $161,283,529
                                                ============        ============


See notes to financial statements.


                                       2

                    Pactiv 401(k) Savings and Investment Plan

             Statements of Changes in Assets Available for Benefits



                                                                  Year ended December 31,
                                                                  2003               2002
                                                              ------------       -------------
                                                                           
ADDITIONS
Dividends and interest income                                 $  1,541,739       $   1,829,290
Net realized and unrealized appreciation (depreciation)
   In fair value of investments:
     Common stock                                                6,082,881          11,459,747
     Registered investment companies                            21,895,865         (20,197,757)
                                                              ------------       -------------
Total net realized and unrealized appreciation
   (depreciation) in fair value of investments                  27,978,746          (8,738,010)

Contributions:
   Participant                                                  11,241,769          10,653,579
   Employer                                                      9,075,314           7,517,457
   Rollover                                                        820,175             954,789
                                                              ------------       -------------
Total                                                           21,137,258          19,125,825
                                                              ------------       -------------
Total additions                                                 50,657,743          12,217,105
DEDUCTIONS
Benefit payments                                                11,241,572          12,137,395
Administrative expenses                                             38,702              30,044
                                                              ------------       -------------
Total deductions                                                11,280,274          12,167,439
                                                              ------------       -------------
Net increase                                                    39,377,469              49,666
Assets available for benefits, beginning or year               161,283,529         161,233,863
                                                              ------------       -------------
Assets available for benefits, end of year                    $200,660,998       $ 161,283,529
                                                              ============       =============


See notes to financial statements


                                       3

                    Pactiv 401(k) Savings and Investment Plan

                          Notes to Financial Statements

                           December 31, 2003 and 2002

1. DESCRIPTION OF PLAN

The following description of the Pactiv 401(k) Savings and Investment Plan (the
Plan), provides only general information. Participants should refer to the Plan
document for a more complete description of the Plan's provisions.

GENERAL

The Plan is a defined contribution plan subject to the provisions of the
Employee Retirement Income Security Act of 1974, as amended (ERISA). Pactiv
Corporation (Company) is the sponsor of the Plan.

ELIGIBILITY AND CONTRIBUTIONS

Employees are eligible to enter the Plan the first day of the month following
the completion of one full calendar month of service. Employees are eligible for
the Company contributions after completing one year of service.

Participants may make contributions by payroll deduction of 1% up to 16% of
compensation as defined in the Plan, with such contributions limited to $12,000
for 2003 and $11,000 for 2002. The Company makes matching contributions equal to
100% of participants' contributions based on years of participation in the Plan
as follows:



                                           MAXIMUM MATCH AS A PERCENTAGE
          YEARS OF PARTICIPATION             OF ELIGIBLE COMPENSATION
          ----------------------           -----------------------------
                                        
                Less than 3                             4
             3 to less than 5                           5
             5 to less than 7                           6
                7 or more                               8



Effective January 1, 2003, certain participants received Company matching
contributions of 100% of the first 3%, and 50% of the next 2% of contributions
made to the Plan. This applied to employees that are hired, rehired, or
transferred into a salaried position on or after January 1, 2003, and current
employees that are not actively contributing to the Plan on December 31, 2002
(or on January 31, 2003 if hired in November of 2002 or on February 28, 2003 if
hired in December 2002).

Company matching contributions can be made in shares of Company stock or cash.
In 2003 and 2002, $9,075,314 and $7,517,457, respectively, of Company matching
contributions were made in shares of Company stock. Effective January 29, 2002,
participants were a permitted to sell Company common stock attributable to
Company matching contributions and transfer related amounts into other
investment options offered by the Plan.

Prior to January 29, 2002, Company matching contributions were required to
remain in the form of Pactiv Corporation common stock until participants reached
age 55 or terminated employment and requested a total distribution.

INVESTMENT OPTIONS

Participants have the right upon enrollment to select the funds offered by the
Plan in which the balance in their accounts, will be invested.

VESTING

Participants are always 100% vested in their entire account balances.


                                       4

PAYMENT OF BENEFITS

Upon retirement or other termination of employment, a participant may receive
his vested account balance as a lump-sum distribution. A participant who has
attained age 55 may elect to make an in-service withdrawal, but if such a
participant has not attained age 59 -1/2, the amount of such withdrawal may not
exceed the participant's account balance reduced by the portion of the account
balance attributable to participant contributions. A participant who has
attained age 59 -1/2 may elect to make an in-service withdrawal of all or a
portion of his account balance. A participant may elect at any time to make an
in-service withdrawal of the balance in his rollover and after-tax contributions
account. A participant who has not attained age 55 may request an in-service
withdrawal of his contributions made prior to April 1, 1984, and any Company
matching contributions credited to his account prior to January 1, 1993.

PARTICIPANT LOANS

Active participants who have not had a loan during the previous three months may
obtain a loan from their account with a term not to exceed 4 -1/2 years. The
borrower may have only one loan outstanding at any time, and the amount of the
loan may not be less than $1,000 and may not exceed the lesser of $50,000 or
one-half the borrower's account balance. Interest on loans is charged at the
prevailing prime rate as published in The Wall Street Journal. Principal and
interest are paid through payroll deductions.

PLAN TERMINATION

Although it has not expressed any intent to do so, the Company has the right to
discontinue its contributions at any time and to terminate the Plan, subject to
the provisions of ERISA.

ADMINISTRATION

The Plan is currently administered by the Pactiv Corporation Benefits Committee.

2. SUMMARY OF ACCOUNTING POLICIES

BASIS OF ACCOUNTING

Financial statements of the Plan are prepared using the accrual basis of
accounting.

PARTICIPANT ACCOUNTS

Each participant's account is credited with the participant's and the Company's
contributions, and an allocation of Plan earnings (losses). Allocations of
earnings (losses) are based on account balances, as defined by the Plan. The
benefit to which a participant is entitled is the balance in his account.

EXPENSES

Substantially all Plan administrative expenses are paid by the Plan, including
recordkeeping and trustee fees.

USE OF ESTIMATES

The preparation of financial statements in conformity with U.S. generally
accepted accounting principles requires management to use estimates and
assumptions. Actual results could differ from such estimates.

INVESTMENT VALUATION

Shares of registered investment companies are valued at quoted market prices,
which represent the net asset values of shares on the last business day of the
Plan year. The fair value of common stock is determined using quoted market
prices. Participant loans are stated at their outstanding balance, which
approximates fair value.


                                       5

3. RISKS AND UNCERTAINTIES

The Plan invests in various investment securities. Investment securities are
exposed to various risks such as interest rate, market and credit risks. Due to
the level of risk associated with certain investment securities, it is at least
reasonably possible that changes in the values of investment securities will
occur in the near term and that such changes could materially affect
participants' account balances and the amounts reported in the statements of
assets available for benefits.

4. INVESTMENTS

Investments that represented 5% or more of fair value of the Plan's net assets
were as follows:



                                                    2003              2002
                                                 ----------        -----------
                                                             
Pactiv Corporation Common Stock                  $66,835,218       $59,687,175
Fidelity Growth Company Fund                      42,829,173        27,483,568
Fidelity Retirement Money Market Portfolio        29,352,865        31,789,379
Spartan U.S. Equity Index Fund                    17,117,527        12,640,296
PIMCO Total Return Fund                                   **         8,684,184


- ----------
* Included nonparticipant-directed investments through January 29, 2002
** Below 5% threshold

5. NONPARTICIPANT-DIRECTED INVESTMENTS

Significant components of change in assets relating to the
nonparticipant-directed investments are shown below.



                                                JANUARY 1, 2002
                                               THOUGH JANUARY 29,
                                                      2002
                                               ------------------
                                            
Net realized and unrealized appreciation in
   fair value of common stock                     $ 490,222
Company contributions                               577,289
Benefit payments                                   (476,789)


Effective January 29, 2002, the Pactiv common stock fund became fully
participant directed.

6. INCOME TAX STATUS

The Plan received a determination letter from the Internal Revenue Service dated
November 19, 2002, stating that the Plan is qualified under Section 401(a) of
the Internal Revenue Code (Code) and, therefore, the related trust is exempt
from taxation. Subsequent to the issuance of the determination letter, the Plan
was amended. Once qualified, the Plan is required to operate in conformity with
the Code to maintain its qualification. The plan administrator believes that the
Plan is being operated in compliance with the applicable requirements of the
Code and, therefore, believes that the Plan, as amended, is qualified and that
the related trust is tax exempt.

7. PARTY-IN-INTEREST

The Plan invests in Pactiv Corporation common stock. Pactiv Corporation is the
Plan's sponsor and, therefore, such investments are party-in-interest
transactions. Fidelity Management Trust Company is the trustee of the Plan and,
therefore, Plan investments in various Fidelity-sponsored funds are considered
party-in-interest transactions.

8. SUBSEQUENT EVENT

Effective January 1, 2004, participants may elect to defer up to 25% of
compensation, as defined by the Plan.


                                       6

                    Pactiv 401(k) Savings and Investment Plan

         Schedule H, Line 4i - Schedule of Assets (Held at End of Year)

                                December 31, 2003


                                                                             NO. OF
                                                                           SHARES OR           CURRENT
IDENTITY OF ISSUER               DESCRIPTION OF ASSET                        UNITS              VALUE
- -------------------      -----------------------------------------      ---------------      ------------
                                                                                    
Fidelity Management
  Trust Company           PIMCO Total Return Fund                               848,362      $  9,085,954
                          Morgan Stanley Institutional Fund -
                             Small Company Growth Portfolio                     290,193         3,029,618
                          Davis New York Venture Fund                           126,456         3,480,062
                          Pactiv Corporation Common Stock*                    2,796,453        66,835,218
                          Tenneco Automotive Common Stock                       147,250           795,204
                          Fidelity Growth Company Fund*                         855,386        42,829,173
                          Fidelity Asset Manager Fund*                          469,290         7,396,010
                          Fidelity Low-Priced Stock Fund*                       263,312         9,210,664
                          Fidelity Diversified International Fund*              282,652         6,817,575
                          Spartan Extended Market Index Fund                     38,353         1,047,793
                          Fidelity Retirement Money Market
                             Portfolio*                                      29,352,865        29,352,865
                          Spartan U.S. Equity Index Fund                        434,345        17,117,527
                          Participant loans                             Interest rates
                                                                        Ranging from
                                                                        4% to 10%               3,330,359
                                                                                             ------------
                                                                                             $200,328,022
                                                                                             ============


- ----------
*Indicates party-in-interest to the Plan.



                                       7

                                   SIGNATURES

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

                                 PACTIV 401(k) SAVINGS AND INVESTMENT PLAN

Date:  June 28, 2004               /s/ Henry M. Wells, III
                                ---------------------------------------------
                                             Henry M. Wells, III
                                  Vice President and Chief Human Resources
                                  Officer and Member of Pactiv Corporation
                                              Benefits Committee


                                       8