Sullivan (Noun) — United States educator who was the teacher and lifelong companion of Helen Keller (1866-1936).
Sullivan (Noun) — English composer of operettas who collaborated with the librettist William Gilbert (1842-1900).
Sullivan (Noun) — United States architect known for his steel framed skyscrapers and for coining the phrase 'form follows function' (1856-1924).
Sullivan (Noun) — United States psychiatrist (1892-1949).
Sullivan (Noun) — United States host on a well known television variety show (1902-1974).