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


                                    FORM 8-K


                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


         Date of Report (Date of Earliest Event Reported): June 10, 2005


                            IRIS INTERNATIONAL, INC.
             (Exact name of registrant as specified in its charter)


          DELAWARE                 001-11181                     94-2579751
(State or other jurisdiction      (Commission                 (I.R.S. Employer
      of incorporation)           File Number)               Identification No.)


                                9172 ETON AVENUE
                              CHATSWORTH, CA 91311
                (Address of Principal Executive Offices/Zip Code)


                                 (818) 709-1244
              (Registrant's telephone number, including area code)


         Check the  appropriate  box below if the Form 8-K filing is intended to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (SEE General Instruction A.2. below):

         |_|      Written   communications   pursuant  to  Rule  425  under  the
                  Securities Act (17 CFR 230.425)

         |_|      Soliciting material pursuant to Rule 14a-12 under the Exchange
                  Act (17 CFR 240.14a-12)

         |_|      Pre-commencement  communications  pursuant  to  Rule  14d-2(b)
                  under the Exchange Act (17 CFR 240.14d-2(b))

         |_|      Pre-commencement  communications  pursuant  to Rule  13e-4(c))
                  under the Exchange Act (17 CFR 240.13e-4c))





ITEM 5.02.        DEPARTURE  OF DIRECTORS  OR  PRINCIPAL  OFFICERS;  ELECTION OF
                  DIRECTORS; APPOINTMENT OF PRINCIPAL OFFICERS

         Effective June 10, 2005,  our Board of Directors  increased the size of
the Board to six members and appointed  Thomas H. Adams,  Ph.D. as a Director of
the Company.

         There are no understandings  or arrangements  between Dr. Adams and any
other person  pursuant to which Dr. Adams was selected as a director.  Dr. Adams
does not have any family  relationship  with any director,  executive officer or
person  nominated  or chosen by our Board of  Directors  to become a director or
executive officer.  Additionally,  there have been no transactions, or series of
related  transactions,  in the last year,  nor is there any  currently  proposed
transaction,  or series of similar transactions,  to which the Company or any of
its  subsidiaries was a party, or will be a party, and in which Dr. Adams or any
member of his immediate family had, or will have, a direct or indirect  material
interest.

         A press release  announcing Dr. Adams's  appointment is attached hereto
as Exhibit 99.1.

ITEM 9.01.        FINANCIAL STATEMENTS AND EXHIBITS


         (c)      Exhibits.

                  The following exhibits are filed herewith:

                  EXHIBIT
                  NUMBER   DESCRIPTION
                  -------  -----------

                  99.1     Press Release announcing the Appointment of Thomas H.
                           Adams,  Ph.D.  as a Director  of IRIS  International,
                           Inc., dated June 10, 2005.


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                                    SIGNATURE

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                         IRIS INTERNATIONAL, INC.



Date:    June 10, 2005                   By:      /s/ Martin G. Paravato
                                                  ------------------------------
                                                  Martin G. Paravato
                                                  Chief Financial Officer


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                                  EXHIBIT INDEX

EXHIBIT
NUMBER            DESCRIPTION
- -------           -----------

99.1              Press Release  announcing the  Appointment of Thomas H. Adams,
                  Ph.D. as a Director of IRIS  International,  Inc.,  dated June
                  10, 2005.


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