William Mills "Bill" Irwin (born April 11, 1950) is an American actor, clown (noted for his contribution to the renaissance of American circus during the 1970s), and comedian, best known for his vaudeville-style stage performances.

His Disney roles included Ham Gravy - the Old Boyfriend in Popeye, a mime in Scenes from a Mall and an unnamed brother in Sister Act 2: Back in the Habit. He also performed at a Disney-sponsored event in 1996, hosted by Steve Allen.