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


                                    FORM S-8

             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                           PARKER-HANNIFIN CORPORATION
                -----------------------------------------------
             (Exact name of registrant as specified in its charter)

          Ohio                                          34-0451060
--------------------------------------------------------------------------------
(State or other jurisdiction of                      (I.R.S. Employer
incorporation or organization)                      Identification No.)

6035 Parkland Boulevard, Cleveland, Ohio                  44124
--------------------------------------------------------------------------------
(Address of Principal Executive Offices)                (Zip Code)

      PARKER-HANNIFIN CORPORATION NON-EMPLOYEE DIRECTORS STOCK OPTION PLAN
--------------------------------------------------------------------------------
                            (Full title of the plan)

      CT Corporation System, 1300 East Ninth Street, Cleveland, Ohio 44114
--------------------------------------------------------------------------------
                    (Name and address of agent for service)

                                 (216) 621-4270
--------------------------------------------------------------------------------
          (Telephone number, including area code, of agent for service)

                         CALCULATION OF REGISTRATION FEE


----------------------------------------------------------------------------------------------------
                                            Proposed maximum    Proposed maximum
 Title of securities to    Amount to be    offering price per  aggregate offering      Amount of
     be registered        registered (1)       share (2)            price (2)      registration fee
----------------------------------------------------------------------------------------------------
                                                                       
Common Stock, par value
$.50 per share                375,000            $41.76            $15,660,000         $1,440.72
----------------------------------------------------------------------------------------------------


(1)      Pursuant to Rule 416 of the Securities Act of 1933 (the "Securities
         Act"), this Registration Statement also covers such additional shares
         of Common Stock, $.50 par value per share (the "Common Stock"), as may
         become issuable pursuant to the anti-dilution provisions of the
         Parker-Hannifin Corporation Non-Employee Directors Stock Option Plan.

(2)      Estimated solely for calculating the amount of the registration fee,
         pursuant to paragraphs (c) and (h) of Rule 457 of the General Rules and
         Regulations under the Securities Act, on the basis of the average of
         the high and low sale prices of the Common Stock on the New York Stock
         Exchange on February 7, 2003.



                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3.  Incorporation of Document by Reference.

       The following documents previously filed by Parker-Hannifin Corporation
(the "Corporation") with the Securities and Exchange Commission are incorporated
herein by reference:

       (1)    Annual Report on Form 10-K for the fiscal year ended June 30,
              2002;

       (2)    Quarterly Report on Form 10-Q for the quarter ended September 30,
              2002;

       (3)    Quarterly Report on Form 10-Q for the quarter ended December 31,
              2002;

       (4)    Current Report on Form 8-K filed with the Securities and Exchange
              Commission on August 14, 2002;

       (5)    Current Report on Form 8-K filed with the Securities and Exchange
              Commission on February 6, 2003;

       (6)    Current Report on Form 8-K filed with the Securities and Exchange
              Commission on February 7, 2003; and

       (7)    The description of the Corporation's Common Stock, par value $.50
              per share, contained in the Corporation's Registration Statement
              on Form 8-A filed with the Commission on September 8, 1967 and all
              amendments and reports filed for the purpose of updating that
              description.

       All documents that shall be filed by the Corporation pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934 subsequent to
the filing of this registration statement and prior to the filing of a
post-effective amendment indicating that all securities offered under the
Corporation's Non-Employee Directors Stock Option Plan have been sold or
deregistering all securities then remaining unsold thereunder shall be deemed to
be incorporated herein by reference and shall be deemed to be a part hereof from
the date of filing thereof.

Item 6.  Indemnification of Directors and Officers.

       Article VII of the Corporation's Code of Regulations provides as follows:

       The Corporation shall indemnify, to the full extent permitted or
authorized by the Ohio General Corporation Law as it may from time to time be
amended, any person made or threatened to be made a party to any threatened,
pending or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative, by reason of the fact that he is or was a
director, officer or employee of the Corporation, or is or was serving at the
request of the Corporation as a director, trustee, officer or employee of
another corporation, partnership, joint venture, trust or other enterprise. The
indemnification provided by this Article VII shall not be deemed exclusive of
any other rights to which any person seeking indemnification may be entitled
under the articles of incorporation or the regulations, or any agreement, vote
of shareholders or disinterested directors, or otherwise, both as to action in
his official capacity and as to action in another capacity while holding such
office, and shall continue as to a person who has ceased to be a director,
trustee, officer or employee and shall inure to the benefit of the heirs,
executors and administrators of such a person.

       Section 1701.13(E) of the Ohio Revised Code ("Revised Code") provides as
follows:

       (E)(1) A corporation may indemnify or agree to indemnify any person who
was or is a party, or is threatened to be made a party, to any threatened,
pending, or completed action, suit, or proceeding, whether civil, criminal,
administrative, or investigative, other than an action by or in the right of the
corporation, by reason of the fact that he is or was a director, officer,
employee, or agent of the corporation, or is or was serving at the request of
the corporation as a director, trustee, officer, employee, member, manager, or
agent of another corporation, domestic or foreign, nonprofit or for profit, a
limited liability company, or a partnership, joint venture, trust, or other
enterprise, against expenses, including attorneys' fees, judgments, fines, and
amounts paid in settlement actually and reasonably incurred by him in connection
with such action, suit, or proceeding, if he acted in good faith and in a manner
he reasonably believed to be in or not opposed to the best interests of the
corporation, and, with respect to any criminal action or proceeding, if he had
no reasonable cause to believe his conduct was unlawful. The


                                      II-2

termination of any action, suit, or proceeding by judgment, order, settlement,
or conviction, or upon a plea of nolo contendere or its equivalent, shall not,
of itself, create a presumption that the person did not act in good faith and in
a manner he reasonably believed to be in or not opposed to the best interests of
the corporation, and, with respect to any criminal action or proceeding, he had
reasonable cause to believe that his conduct was unlawful.

       (2) A corporation may indemnify or agree to indemnify any person who was
or is a party, or is threatened to be made a party, to any threatened, pending,
or completed action or suit by or in the right of the corporation to procure a
judgment in its favor, by reason of the fact that he is or was a director,
officer, employee, or agent of the corporation, or is or was serving at the
request of the corporation as a director, trustee, officer, employee, member,
manager, or agent of another corporation, domestic or foreign, nonprofit or for
profit, a limited liability company, or a partnership, joint venture, trust, or
other enterprise, against expenses, including attorneys' fees, actually and
reasonably incurred by him in connection with the defense or settlement of such
action or suit, if he acted in good faith and in a manner he reasonably believed
to be in or not opposed to the best interests of the corporation, except that no
indemnification shall be made in respect of any of the following:

              (a) Any claim, issue, or matter as to which such person is
       adjudged to be liable for negligence or misconduct in the performance of
       his duty to the corporation unless, and only to the extent that, the
       court of common pleas or the court in which such action or suit was
       brought determines, upon application, that, despite the adjudication of
       liability, but in view of all the circumstances of the case, such person
       is fairly and reasonably entitled to indemnity for such expenses as the
       court of common pleas or such other court shall deem proper;

              (b) Any action or suit in which the only liability asserted
       against a director is pursuant to Section 1701.95 of the Revised Code.

       (3) To the extent that a director, trustee, officer, employee, member,
manager, or agent has been successful on the merits or otherwise in defense of
any action, suit, or proceeding referred to in division (E)(1) or (2) of this
section, or in defense of any claim, issue, or matter therein, he shall be
indemnified against expenses, including attorney's fees, actually and reasonably
incurred by him in connection with the action, suit, or proceeding.

       (4) Any indemnification under division (E)(1) or (2) of this section,
unless ordered by a court, shall be made by the corporation only as authorized
in the specific case, upon a determination that indemnification of the director,
trustee, officer, employee, member, manager, or agent is proper in the
circumstances because he has met the applicable standard of conduct set forth in
division (E)(1) or (2) of this section. Such determination shall be made as
follows:

              (a) By a majority vote of a quorum consisting of directors of the
       indemnifying corporation who were not and are not parties to or
       threatened with the action, suit, or proceeding referred to in division
       (E)(1) or (2) of this section;

              (b) If the quorum described in division (E)(4)(a) of this section
       is not obtainable or if a majority vote of a quorum of disinterested
       directors so directs, in a written opinion by independent legal counsel
       other than an attorney, or a firm having associated with it an attorney,
       who has been retained by or who has performed services for the
       corporation or any person to be indemnified within the past five years;

              (c) By the shareholders;

              (d) By the court of common pleas or the court in which the action,
       suit, or proceeding referred to in division (E)(1) or (2) of this section
       was brought.

       Any determination made by the disinterested directors under division
(E)(4)(a) or by independent legal counsel under division (E)(4)(b) of this
section shall be promptly communicated to the person who threatened or brought
the action or suit by or in the right of the corporation under division (E)(2)
of this section, and within ten days after receipt of such notification, such
person shall have the right to petition the court of common pleas or the court
in which such action or suit was brought to review the reasonableness of such
determination.


                                      II-3

       (5)(a) Unless at the time of a director's act or omission that is the
subject of an action, suit, or proceeding referred to in division (E)(1) or (2)
of this section, the articles or the regulations of a corporation state, by
specific reference to this division, that the provisions of this division do not
apply to the corporation and unless the only liability asserted against a
director in an action, suit, or proceeding referred to in division (E)(1) or (2)
of this section is pursuant to Section 1701.95 of the Revised Code, expenses,
including attorney's fees, incurred by a director in defending the action, suit,
or proceeding shall be paid by the corporation as they are incurred, in advance
of the final disposition of the action, suit, or proceeding, upon receipt of an
undertaking by or on behalf of the director in which he agrees to do both of the
following:

              (i) Repay such amount if it is proved by clear and convincing
       evidence in a court of competent jurisdiction that his action or failure
       to act involved an act or omission undertaken with deliberate intent to
       cause injury to the corporation or undertaken with reckless disregard for
       the best interests of the corporation;

              (ii) Reasonably cooperate with the corporation concerning the
       action, suit, or proceeding.

       (b) Expenses, including attorney's fees, incurred by a director, trustee,
officer, employee, member, manager, or agent in defending any action, suit, or
proceeding referred to in division (E)(1) or (2) of this section, may be paid by
the corporation as they are incurred, in advance of the final disposition of the
action, suit, or proceeding, as authorized by the directors in the specific
case, upon receipt of an undertaking by or on behalf of the director, trustee,
officer, employee, member, manager, or agent to repay such amount, if it
ultimately is determined that he is not entitled to be indemnified by the
corporation.

       (6) The indemnification authorized by this section shall not be exclusive
of, and shall be in addition to, any other rights granted to those seeking
indemnification under the articles, the regulations, any agreement, a vote of
shareholders or disinterested directors, or otherwise, both as to action in
their official capacities and as to action in another capacity while holding
their offices or positions, and shall continue as to a person who has ceased to
be a director, trustee, officer, employee, member, manager, or agent and shall
inure to the benefit of the heirs, executors, and administrators of such a
person.

       (7) A corporation may purchase and maintain insurance or furnish similar
protection, including, but not limited to, trust funds, letters of credit, or
self-insurance, on behalf of or for any person who is or was a director,
officer, employee, or agent of the corporation, or is or was serving at the
request of the corporation as a director, trustee, officer, employee, member,
manager, or agent of another corporation, domestic or foreign, nonprofit or for
profit, a limited liability company, or a partnership, joint venture, trust, or
other enterprise, against any liability asserted against him and incurred by him
in any such capacity, or arising out of his status as such, whether or not the
corporation would have the power to indemnify him against such liability under
this section. Insurance may be purchased from or maintained with a person in
which the corporation has a financial interest.

       (8) The authority of a corporation to indemnify persons pursuant to
division (E)(1) or (2) of this section does not limit the payment of expenses as
they are incurred, indemnification, insurance, or other protection that may be
provided pursuant to divisions (E)(5), (6), and (7) of this section. Divisions
(E)(1) and (2) of this section do not create any obligation to repay or return
payments made by the corporation pursuant to division (E)(5), (6), or (7).

       (9) As used in this division, references to "corporation" includes all
constituent entities in a consolidation or merger and the new or surviving
corporation, so that any person who is or was a director, officer, employee,
trustee, member, manager, or agent of such a constituent entity, or is or was
serving at the request of such constituent entity as a director, trustee,
officer, employee, member, manager, or agent of another corporation, domestic or
foreign, nonprofit or for profit, a limited liability company, or a partnership,
joint venture, trust, or other enterprise, shall stand in the same position
under this section with respect to the new or surviving corporation as he would
if he had served the new or surviving corporation in the same capacity.

       Under the terms of an Indemnification Agreement, filed as Exhibit 10(c)
to the Registrant's Form 10-K for the fiscal year ended June 30, 2000, to which
reference is hereby made, each Director and certain officers of the Registrant
are indemnified against certain liabilities, including liabilities arising under
the Securities Act.


                                      II-4

Item 8.  Exhibits.

   Exhibit No.                        Description of Exhibit
   ----------                         ----------------------
       4(a)   Amended Articles of Incorporation are hereby incorporated by
              reference to Exhibit 3 to the Registrant's Report on Form 10-Q for
              the quarter ended September 30, 1997 (Commission File No. 1-4982).

       4(b)   Code of Regulations is hereby incorporated by reference to Exhibit
              3(b) to the Registrant's Report on Form 10-K for the fiscal year
              ended June 30, 2001 (Commission File No. 1-4982).

       4(c)   Rights Agreement is hereby incorporated by reference to Exhibit
              4.1 to the Registrant's Report on Form 8-K filed with the
              Commission on February 4, 1997 (Commission File No. 1-4982), as
              amended by the First Addendum and the Second Addendum which are
              incorporated by reference to Exhibit 4(a) to the Registrant's
              Report on Form 10-K for the fiscal year ended June 30, 1999
              (Commission File No. 1-4982).

       5*     Opinion of Counsel

       23(a)* Consent of Independent Accountants

       23(b)* Consent of Counsel - See Exhibit 5

       24*    Power of Attorney

-------------
*Filed herewith

Item 9.  Undertakings

(a)    The undersigned Registrant hereby undertakes:

       (1) To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:

              (i) To include any prospectus required by Section 10(a)(3) of the
       Securities Act of 1933;

              (ii) To reflect in the prospectus any facts or events arising
       after the effective date of the Registration Statement (or the most
       recent post-effective amendment thereof) which, individually or in the
       aggregate, represent a fundamental change in the information set forth in
       the Registration Statement. Notwithstanding the foregoing, any increase
       or decrease in volume of securities offered (if the total dollar value of
       securities offered would not exceed that which was registered) and any
       deviation from the low or high end of the estimated maximum offering
       range may be reflected in the form of prospectus filed with the
       Commission pursuant to Rule 424(b), if, in the aggregate, the changes in
       volume and price represent no more than 20% change in the maximum
       aggregate offering price set forth in the "Calculation of Registration
       Fee" table in the effective Registration Statement;

              (iii) To include any material information with respect to the plan
       of distribution not previously disclosed in the Registration Statement or
       any material change to such information in the Registration Statement;
       provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply
       if the Registration Statement is on Form S-3 or Form S-8, and the
       information required to be included in a post-effective amendment by
       those paragraphs is contained in periodic reports filed by the Registrant
       pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of
       1934 that are incorporated by reference in the Registration Statement.

       (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.


                                      II-5

       (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

       (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

       (c) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

                                   SIGNATURES

       Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Mayfield Heights, State of Ohio, on this 13th day of
February, 2003.

                                       PARKER-HANNIFIN CORPORATION

                                       By: /s/ Thomas A. Piraino, Jr.
                                           Thomas A. Piraino, Jr.
                                           Vice President, General Counsel
                                           and Secretary

       Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.

       Officers and Directors of Parker-Hannifin Corporation:

DUANE E. COLLINS, Chairman of the Board; DONALD E. WASHKEWICZ, Chief Executive
Officer and Director; MICHAEL J. HIEMSTRA, Principal Financial Officer; DANA A.
DENNIS, Principal Accounting Officer; JOHN G. BREEN, Director; WILLIAM E.
KASSLING, Director; ROBERT J. KOHLHEPP, Director; PETER W. LIKINS, Director;
GIULIO MAZZALUPI, Director; KLAUS-PETER MULLER, Director; CANDY M. OBOURN,
Director; HECTOR R. ORTINO, Director; ALLAN L. RAYFIELD, Director; WOLFGANG R.
SCHMITT, Director; DEBRA L. STARNES, Director; and DENNIS W. SULLIVAN, Director.

       This Registration Statement has been signed on behalf of the above-named
directors and officers of the Registrant by Thomas A. Piraino, Jr., Vice
President, General Counsel and Secretary of the Registrant, as attorney-in-fact
pursuant to a power of attorney filed with the Securities and Exchange
Commission as Exhibit 24 to this Registration Statement.

February 13, 2003                      By: /s/Thomas A. Piraino, Jr.
                                           Thomas A. Piraino, Jr.
                                           Attorney-in-Fact


                                      II-6

                                  EXHIBIT INDEX

    Exhibit
     Number                          Exhibit Description
    --------                         -------------------
       4(a)   Amended Articles of Incorporation are hereby incorporated by
              reference to Exhibit 3 to the Registrant's Report on Form 10-Q for
              the quarter ended September 30, 1997 (Commission File No. 1-4982).

       4(b)   Code of Regulations is hereby incorporated by reference to Exhibit
              3(b) to the Registrant's Report on Form 10-K for the fiscal year
              ended June 30, 2001 (Commission File No. 1-4982).

       4(c)   Rights Agreement is hereby incorporated by reference to Exhibit
              4.1 to the Registrant's Report on Form 8-K filed with the
              Commission on February 4, 1997 (Commission File No. 1-4982), as
              amended by the First Addendum and the Second Addendum which are
              incorporated by reference to Exhibit 4(a) to the Registrant's
              Report on Form 10-K for the fiscal year ended June 30, 1999
              (Commission File No. 1-4982).

       5*     Opinion of Counsel

       23(a)* Consent of Independent Accountants

       23(b)* Consent of Counsel - See Exhibit 5

       24*    Power of Attorney

-------------
*Filed herewith