William Joseph Schallert was an American character actor who appeared in dozens of television shows and films over a career spanning more than 60 years. He is known for his roles on Richard Diamond, Private Detective (1957–1959), Death Valley Days (1955–1962), and The Patty Duke Show (1963–1966).

Richard Diamond, Private Detective is an American detective drama, created by Blake Edwards, which aired on radio from 1949 to 1953, and on television from 1957 to 1960.