Thomas Edward Bosley (born October 1, 1927) is an American actor, best known for his starring and supporting roles on the television shows Happy Days, Murder, She Wrote and Father Dowling Mysteries.

Bosley was born in Chicago, Illinois; he is Jewish. During World War II, Bosley served in the United States Navy. While attending DePaul University, in Chicago, in 1947, he made his stage debut in Our Town with the Canterbury Players at the Fine Arts Theatre. Bosley performed at the Woodstock Opera House in Woodstock, Illinois, in 1949 and 1950 alongside Paul Newman.

Bosley's breakthrough stage role was New York mayor Fiorello H. La Guardia in the long-running Broadway musical Fiorello! in (1959), for which he won a Tony Award. In 1994, he originated the role of Maurice in the Broadway version of Disney's Beauty & the Beast.