Ron Leibman is an American actor. He won the Tony Award for Best Actor in a Play for his role as Roy Cohn in Angels in America: Millennium Approaches, a role he later reprised in Angels in America: Perestroika (Walter Kerr Theatre). Other Broadway credits include Ron's debut as Peter Nemo in Dear Me, The Sky is Falling (Music Box Theatre); Lenny Ganz in Rumors (Broadhurst/Ethel Barrymore Theatres); Lennie in Doubles (Ritz Theatre); Herb in I Ought to Be in Pictures (Eugene O'Neill Theatre); Cop-Out and Rip Calabria in Bicycle Ride to Nevada (Cort Theatre); Sergeant Henderson in We Bombed New Haven (Ambassador Theatre); and Captain Salzer in The Deputy (Brooks Atkinson Theatre).

Off-Broadway credits include Samuel Baum in Adam Baum and the Jew Movie (McGinn-Cazale Theatre); Rabbi Azriel in A Dybbuk, or Between Two Worlds and Rich and Famous (Newman Theatre); and Shylock in The Merchant of Venice (Anspacher Theater).