Joseph Steiner, B.A., LL.B., M.Phil., is a partner in the Canadian law firm Osler, Hoskin & Harcourt LLP practicing in the areas of commercial and tax litigation.

He has served as President of UJA Federation of Greater Toronto, Chair of UJA Federation's Board of Jewish Education and President of Bialik Hebrew Day School. He currently sits on the Boards of RAVSAK and the Shalom Hartman Institute. He is also a member of the Board and Executive of Hillel of Greater Toronto as well as the Boards of two Toronto Jewish day schools (Bialik Hebrew Day School and the Paul Penna Downtown Jewish Day School).

Joseph Steiner served as an Assembly Member on Board Committees from June 2002 through December 2005.

Joseph currently serves as an Associate-Member of the Board of Governors.