Harold Vincent Guardino (December 23, 1925 – July 17, 1995) was an American actor whose career spanned from the early 1950s to the early 1990s.

He made guest appearances on such series as Studio One, Target: The Corruptors!, The Eleventh Hour, The Untouchables, Alfred Hitchcock Presents, Kraft Television Theatre, Playhouse 90, Dr. Kildare, The Lloyd Bridges Show, Route 66, Ben Casey, Hawaii Five-O, Night Gallery, Twelve O'Clock High, Love, American Style, The Greatest Show on Earth, Kojak, Wonder Woman, Hunter, The F.B.I., The Streets of San Francisco, Jake and the Fatman and Cheers. In film, he played Inspector Harry Callahan's superior Lieutenant Al Bressler in both Dirty Harry (1971) and The Enforcer (1976).

He played the dual role of Major Roger Brothers and Brothers in Hamilton's body in the original series episode "The Human Factor".