Sean Sullivan (December 26, 1921 – June 3, 1985) was a Canadian actor. He is most noted for his stage and television performances in productions of David French's play Of the Fields, Lately, for which he won an ACTRA Award in 1977 as Best Television Actor for the CBC Television film; and his film performances in Springhill, for which he won a Canadian Film Award as Best Actor in a Non-Feature Film in 1972, and The Boy in Blue, for which he received a posthumous Genie Award nomination for Best Supporting Actor at the 7th Genie Awards in 1986.