EXHIBIT 23.1


                         CONSENT OF INDEPENDENT AUDITORS



We  consent to the  reference  to our firm under the  caption  "Experts"  in the
Registration  Statement (Form S-4) and related  Prospectus of Cintas Corporation
for  the  registration  of  7,500,000  shares  of its  common  stock  and to the
incorporation  by  reference  therein  of our report  dated  July 2, 1998,  with
respect  to  the  consolidated   financial   statements  of  Cintas  Corporation
incorporated  by reference in its Annual  Report on Form 10-K for the year ended
May  31,  1998  and  our  report  dated  April  30,  1999  with  respect  to the
supplemental consolidated financial statements of Cintas Corporation included in
its  Current  Report on Form  8-K/A  filed May 7, 1999 with the  Securities  and
Exchange Commission.



                                                      ERNST & YOUNG LLP


Cincinnati, Ohio
April 30, 1999