Bart Williams was a character actor best known for writing, producing and co-directing the 2010 documentary The Last First Comic, which explored the history of American comedy and the end of vaudeville theater. The film featured 97-year-old Irv Benson, the last living burlesque comedian, who was known for playing Sidney Spritzer, an audience member who heckled Milton Berle as a part of their act.

Williams appeared in films as well, including Hello, Dolly!, Tunnel Vision, An Enemy of the People, Short Circuit 2 and Hadley's Rebellion. His work in television included small roles on MADtv, Good Grief, Weird Science, General Hospital and the telefilm The Doomsday Clock.

He also appeared in many Actors’ Equity productions, including roles as Franklin Delano Roosevelt in Annie, Cap’n Andy in Show Boat, Major General Stanley in The Pirates of Penzance and the Wizard in The Wizard of Oz.

Williams died June 29, 2015, in Bullhead City, Arizona. He was 65.