William Preston (August 26, 1921 – July 10, 1998) was an American actor from Manheim, Pennsylvania.
He did not begin acting until the age of 47 but subsequently appeared in more than sixty productions of Shakespeare's plays.
He is perhaps best known for his role as recurring character Carl "Oldie" Olsen on Late Night with Conan O'Brien.
Among his many movie roles, he played John, the bum, from The Fisher King (1991), a blacksmith in Far and Away (1992), and the flask mourner in Family Business (1989).
He later appeared in Waterworld (1995), Reckless (1995), Blue in the Face (1995), and The Crucible (1996).