SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549

                                    FORM 11K

(Mark One)

[X]      ANNUAL REPORT PURSUANT TO SECTION 15(D) OF THE SECURITIES EXCHANGE ACT
         of 1934 (FEE REQUIRED) for the fiscal year ended December 31, 2003 or

[ ]      TRANSITION REPORT PURSUANT TO SECTION 15 (d) OF THE SECURITIES EXCHANGE
         ACT of 1934 (NO FEE REQUIRED) for the transition period from
         _____________  to  _______________

COMMISSION FILE NUMBER     1-7891
                           ------

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

                             DONALDSON COMPANY, INC.
                       EMPLOYEES' RETIREMENT SAVINGS PLAN

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

                             DONALDSON COMPANY, INC.
                              1400 WEST 94TH STREET
                          MINNEAPOLIS, MINNESOTA 55431





DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULE
DECEMBER 31, 2003 AND 2002






DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
INDEX
--------------------------------------------------------------------------------

                                                                         PAGE(S)

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM.....................1

FINANCIAL STATEMENTS

Statement of Net Assets Available for Benefits
December 31, 2003 and 2002..................................................2

Statement of Changes in Net Assets Available for Benefits
Year Ended December 31, 2003................................................3

Notes to Financial Statements.............................................4-7

SUPPLEMENTAL SCHEDULE

Schedule H, line 4i - Schedule of Assets (Held at End of Year)
December 31, 2003...........................................................8


Note:   Other schedules required by 29 CFR 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 Participants and Administrator of
Donaldson Company, Inc.
Employees' Retirement Savings Plan


In our opinion, the accompanying statement of net assets available for benefits
and the related statement of changes in net assets available for benefits
present fairly, in all material respects, the net assets available for benefits
of the Donaldson Company, Inc. Employees' Retirement Savings Plan (the "Plan")
at December 31, 2003 and 2002, and the changes in net assets available for
benefits for the year ended December 31, 2003, in conformity with accounting
principles generally accepted in the United States of America. 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 of these statements in accordance with the standards of the
Public Company Accounting Oversight Board (United States). Those standards
require that we plan and perform the audits 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, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

Our audits were conducted for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule referred to in
the accompanying index 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. The supplemental schedule is the responsibility of the Plan's management.
The supplemental schedule has been subjected to the auditing procedures applied
in the 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/ PricewaterhouseCoopers LLP


Minneapolis, Minnesota
June 23, 2004






DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
DECEMBER 31, 2003 AND 2002
--------------------------------------------------------------------------------


                                                     2003           2002
Assets
Investments, at fair value
    Interest-bearing cash                        $     32,343    $      3,971
    Mutual funds                                  135,017,301      97,276,727
    Donaldson Company, Inc. common stock fund      49,223,743      32,419,115
    Participant loans                               3,185,225       3,048,038
                                                 ------------    ------------
             Total investments, at fair value     187,458,612     132,747,851
Receivables
    Investment income receivable                          400             355
                                                 ------------    ------------
                                                  187,459,012     132,748,206
LIABILITIES
Investment settlements payable                          2,687          15,665
                                                 ------------    ------------
Net assets available for benefits                $187,456,325    $132,732,541
                                                 ============    ============



























   The accompanying notes are an integral part of these financial statements.

                                       2




DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
YEAR ENDED DECEMBER 31, 2003
--------------------------------------------------------------------------------


INVESTMENT INCOME
Interest and dividend income                                     $   3,390,811
Net appreciation of the fair value of investments                   38,800,633
                                                                 -------------
                                                                    42,191,444
                                                                 -------------
CONTRIBUTIONS
Employer                                                               170,203
Participants                                                        21,103,618
                                                                 -------------
                                                                    21,273,821
                                                                 -------------
DEDUCTIONS
Benefits paid to participants                                       (8,717,817)
Administrative expenses                                                (23,664)
                                                                 -------------
                                                                    (8,741,481)
                                                                 -------------
             Net increase in net assets available for benefits      54,723,784
NET ASSETS AVAILABLE FOR BENEFITS
Beginning of year                                                  132,732,541
                                                                 -------------
End of year                                                      $ 187,456,325
                                                                 =============


























   The accompanying notes are an integral part of these financial statements.

                                       3



DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
NOTES TO FINANCIAL STATEMENTS
DECEMBER 31, 2003 AND 2002
--------------------------------------------------------------------------------


1.       DESCRIPTION OF PLAN

         The Donaldson Company, Inc. Employees' Retirement Savings Plan (the
         "Plan") is a contributory defined contribution plan sponsored by
         Donaldson Company, Inc. (the "Company"). The Plan is subject to the
         applicable provisions of the Employee Retirement Income Security Act of
         1974, as amended ("ERISA").

         The following description of the Plan is provided for general
         information purposes only. Participants should refer to the summary
         plan description for a more complete description of the Plan's
         provisions.

         Fidelity Management Trust Company is the Plan's trustee (the "Trustee")
         and recordkeeper.

         ELIGIBILITY
         Employees are eligible to participate in the Plan upon employment, as
         defined by the Plan document.

         CONTRIBUTIONS
         Each year, eligible participants may contribute to the Plan up to 25%
         of pre-tax annual compensation, as defined by the Plan. Participants
         may also contribute amounts representing rollover distributions from
         other qualified retirement plans with the approval of the
         Administrative Committee.

         The Company may make discretionary contributions to the Plan from time
         to time. Discretionary contributions are allocated among the
         participants pro rata based upon total annual compensation of
         participants who have 1,000 hours of service in the Plan year and are
         in employment of the Company on the last day of the Plan year. The
         Company made no discretionary contributions for the year ended December
         31, 2003.

         In connection with the Company's acquisition of AirMaze Corporation
         ("AirMaze") in November 1999, certain monies were placed in escrow
         pending finalization of the acquisition. Under the sale and purchase
         agreement, any monies released to the Company from the escrow account
         are to be contributed to former AirMaze employees participating in the
         Plan. During the Plan year ended December 31, 2002, amounts totaling
         $722,100 were released and contributed to the Plan as employer
         contributions. During the Plan year ended December 31, 2003, an
         additional $170,203 was contributed to the Plan as a final payment.
         These contributions were allocated to the former AirMaze employees
         participating in the Plan pro rata based on the number of shares of
         AirMaze stock each Participant had in the AirMaze Plan as of the
         acquisition date.

         PARTICIPANT ACCOUNTS
         Participants direct the investment of their contributions into various
         investment options offered by the Plan. If a participant does not
         allocate their contributions, the contributions are placed in the
         Fidelity Managed Income Portfolio II Fund. Company contributions are
         allocated among the investment options in the same manner as
         participant contributions.


                                       4



DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
NOTES TO FINANCIAL STATEMENTS
DECEMBER 31, 2003 AND 2002
--------------------------------------------------------------------------------

         The allocation of the participant's contributions to the investment
         funds may be changed daily. There are no restrictions on transfers
         among or between the various investment options. Each participant's
         account is credited with his or her contributions, including rollover
         distributions, and his or her share of Company contributions, and an
         allocation of related investment earnings thereon. Allocation of
         investment earnings is based on the value of the participant's account
         at the close of each day.

         VESTING
         Participants are 100% vested in their accounts at all times.

         PAYMENT OF BENEFITS
         Upon termination of employment, disability or termination of the Plan,
         a participant or designated beneficiary will receive the vested portion
         of the participant's account balance in a lump-sum payment. Hardship
         withdrawals, as defined in the Plan document, are allowed at any time,
         subject to approval by the Plan.

         PARTICIPANT LOANS
         Under the Plan document, participants may borrow up to 50% of their
         account balance or $50,000, whichever is less. Loans must be repaid by
         the participant within five years, unless the loan is used to acquire
         the participant's primary residence in which case the term may not
         exceed ten years. The loan interest is one percent over the prime
         lending rate on the last business day of the month preceding the month
         in which the loan is granted. Interest rates on outstanding loans at
         December 31, 2003, ranged from 5.25% to 10.50%. Loans mature at various
         dates through September 2012 and are generally paid through monthly
         payroll deductions.

         PLAN TERMINATION
         The Company has the right under the plan agreement to amend or
         terminate the Plan. In the event of termination of the Plan, the assets
         of the Plan will be distributed to the participants in accordance with
         the Plan document.

2.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

         The accompanying financial statements have been prepared on an accrual
         basis. The following is a summary of significant policies which are in
         conformity with accounting principles generally accepted in the United
         States of America and are consistently followed by the Plan in the
         preparation of its financial statements.

         VALUATION OF INVESTMENTS
         Investments in mutual funds are stated at fair value based on quoted
         market prices. Participant loans are valued at estimated fair value,
         which consists of outstanding principal and any related accrued
         interest. Investments in the Donaldson Company, Inc. Common Stock Fund
         are valued based on the fair value of the underlying investments,
         primarily Donaldson Company, Inc. common stock, which is valued at
         quoted market prices.

                                       5



DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
NOTES TO FINANCIAL STATEMENTS
DECEMBER 31, 2003 AND 2002
--------------------------------------------------------------------------------

         INVESTMENT EARNINGS
         Investment income is recorded as earned. Dividend income is recorded on
         the ex-dividend date. The Plan presents the net appreciation
         (depreciation) in the fair value of its investments in the Statement of
         Changes in Net Assets Available for Benefits. Net appreciation
         (depreciation) consists of the realized gains or losses and the
         unrealized appreciation (depreciation) on those investments.

         CONTRIBUTIONS
         Participant contributions are recorded in the period the employer makes
         the payroll deductions. Employer discretionary contributions, if any,
         are recorded in the period they are approved by the Company.

         BENEFITS PAID TO PARTICIPANTS
         Benefits paid to participants are recorded when paid.

         PLAN EXPENSES
         Investment management fees and administrative fees charged by the
         Trustee are paid by the Plan. All other expenses are paid by the
         Company, including legal, accounting and other services.

         USE OF ESTIMATES
         The preparation of financial statements in accordance with accounting
         principles generally accepted in the United States of America requires
         management to make estimates and assumptions that affect the reported
         amounts of net assets available for benefits at the date of the
         financial statements and the reported amounts of changes in net assets
         available for benefits during the reporting period. Ultimate results
         could differ from those estimates.

         RISKS AND UNCERTAINTIES
         The Plan provides for various investment options in various
         combinations of investment securities. Investment securities are
         exposed to various risk factors including, but not limited to, interest
         rates, market conditions and credit risks. Due to the level of risk
         associated with certain investment securities and the level of
         uncertainty related to changes in the value of 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 Statement of Net Assets Available for Benefits in
         future periods.

         CONCENTRATION OF MARKET RISK
         As of December 31, 2003 and 2002, approximately 26% and 24% of the
         Plan's net assets were invested in the Donaldson Company, Inc. Common
         Stock Fund, respectively. The underlying value of this fund is
         dependent on the performance of Donaldson Company, Inc. and the
         market's evaluation of such performance. It is at least reasonably
         possible that changes in the fair value of Donaldson Company, Inc.
         common stock in the near term could materially affect participants'
         account balances and the amounts reported in the Statement of Net
         Assets Available for Benefits and the Statement of Changes in Net
         Assets Available for Benefits.

                                       6



DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
NOTES TO FINANCIAL STATEMENTS
DECEMBER 31, 2003 AND 2002
--------------------------------------------------------------------------------


3.       INVESTMENTS

         The current value of individual investments that represent 5% or more
         of the Plan's net assets is as follows:

                                                         2003          2002

         Donaldson Company, Inc. Common Stock Fund   $ 49,223,743  $ 32,419,115
         Fidelity Managed Income Portfolio II Fund     39,448,813    32,486,923
         Fidelity Equity Income Fund                   34,570,063    25,451,498
         Fidelity Magellan Fund                        18,338,352    14,165,809
         Fidelity Contrafund                           16,304,415    11,466,592
         All other investments-individually
           less than 5%                                29,573,226    16,757,914
                                                     ------------  ------------
                                                     $187,458,612  $132,747,851
                                                     ============  ============

         During the year ended December 31, 2003, investments had net
         appreciation value as follows:

         Mutual funds                                              $ 18,811,811
         Donaldson Company, Inc. Common Stock Fund                   19,988,822
                                                                   ------------
                                                                   $ 38,800,633
                                                                   ============

4.       TAX STATUS

         The Plan has received a favorable determination letter from the
         Internal Revenue Service, dated October 20, 1995, stating that the Plan
         is designed in accordance with the applicable sections of the Internal
         Revenue Code (the "Code") and is therefore generally exempt from
         federal income taxes under provisions of Section 501(a). The Plan has
         been amended since receiving the determination letter. However, the
         Plan administrator believes that the Plan is currently designed and
         being operated in compliance with the applicable requirements of the
         Code. Therefore, no provision for income taxes has been included in the
         Plan's financial statements.

5.       RELATED PARTY TRANSACTIONS

         Participants have the option to direct their contributions to be
         invested in mutual funds which are sponsored by the Trustee, and a
         Company stock fund. The Trustee is authorized, under contract
         provisions and by exemption under 29 CFR 408(b) of ERISA regulations,
         to invest in securities under its control and in the Company. For the
         year ended December 31, 2003, purchases and sales of securities of the
         Company were $1,890,976 and $2,696,853, respectively.



                                       7










                              SUPPLEMENTAL SCHEDULE






DONALDSON COMPANY, INC.
EMPLOYEES' RETIREMENT SAVINGS PLAN
SCHEDULE H, LINE 4I - SCHEDULE OF ASSETS (HELD AT END OF YEAR)
DECEMBER 31, 2003
EIN 41-0222640
PLAN NUMBER 007                                                       SCHEDULE I
--------------------------------------------------------------------------------




(A)               (B)                                      (C)                         (D)                 (E)
                                                DESCRIPTION OF INVESTMENT
            IDENTITY OF ISSUE,                INCLUDING THE MATURITY DATE,
             BORROWER, LESSOR                RATE OF INTEREST, COLLATERAL,                              CURRENT
             OR SIMILAR PARTY                    PAR OR MATURITY VALUE                COST**             VALUE

                                                                                         
 *     Donaldson Company, Inc.         Common Stock Fund, 1,046,212 shares                           $  49,223,743

 *     Fidelity Management Trust       Managed Income Portfolio II Fund,
        Company                         39,448,813 units of participation                               39,448,813

 *     Fidelity Management Trust       Equity Income Fund, 694,876 units of
        Company                         participation                                                   34,570,063

 *     Fidelity Management Trust       Magellan Fund, 187,624 units of
        Company                         participation                                                   18,338,352

 *     Fidelity Management Trust
        Company                        Contrafund, 330,383 units of participation                       16,304,415

 *     Fidelity Management Trust
        Company                        Divers International Fund, 232,140 units                          5,599,214

 *     Fidelity Management Trust       Balanced Fund, 339,111 units of
        Company                         participation                                                    5,680,110

       Schroder U.S.                   Smaller Companies Fund, 325,526 units
                                        of participation                                                 5,553,481

 *     Fidelity Spartan U.S.           Equity Index Fund, 94,554 units of
                                        participation                                                    3,726,392

       Sterling                        Small Cap Value I Fund, 137,087 units                             2,305,800

       PIMCO                           Total Return Fund, 157,679 units                                  1,688,741

       Brokeragelink                   Growth Oriented Fund, 743,911 units                                 743,911

       Brokeragelink                   Interest bearing cash                                                32,343

       Turner                          Concentrated Growth Institutional Fund,
                                        116,867 units                                                      771,319

       FMI Knappenberger Partners      Emerging Growth Fund, 29,830 units                                  286,669

 *     Fidelity Management Trust
        Company                        Retiree Government Fund, 21 units                                        21

 *     Participants                    Participant loans receivable, interest
                                        rates from 5.25% to 10.50%, payable
                                        through September 2012                                           3,185,225
                                                                                                     -------------
                                                                                                     $ 187,458,612
                                                                                                     =============



*        Denotes party-in-interest.

**       Historical cost information is omitted as it is not required by the
         Department of Labor under the instructions to the Form 5500 for
         participant directed accounts.



                                       8







Pursuant to the requirements of the Securities Exchange Act of 1934, the
trustees (or other persons who administer the employee benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned
thereunto duly authorized.

                             DONALDSON COMPANY, INC.
                             -----------------------
                             EMPLOYEES' RETIREMENT SAVINGS PLAN
                             ----------------------------------
                                        (Name of Plan)


Date  June 28, 2004          By: Donaldson Company, Inc., the Plan Administrator



                             /s/ Thomas R. VerHage
                             --------------------------------------
                             Thomas R. VerHage
                             Vice President, Chief Financial Officer








                                  EXHIBIT INDEX

                           ANNUAL REPORT ON FORM 11-K



Exhibit 23        Consent of Independent Public Accountants