William Thomas Gray (born January 13, 1938)[1] is an American actor, competitive motorcycle racer and inventor, known for his role as Bud on the television series Father Knows Best (1954–1960).

He appeared with his mother in the 1949 horror comedy Abbott and Costello Meet the Killer, Boris Karloff (in separated scenes).

He acted with stars such as Humphrey Bogart, Doris Day, Bob Hope, William Holden, Michael Rennie, Judith Anderson, Pat O'Brien and Barbara Stanwyck.

He was cast as Plato in Rebel Without a Cause, but had to exit the role when a delay in shooting interfered with his commitment to Father Knows Best.

[citation needed] As of July 2020[update], Gray lives in Topanga, California, in the same house he bought in 1957 while working on Father Knows Best.