Harry Sullivan may refer to:
Harry Stack Sullivan (1892–1949), American psychologist and psychoanalyst Harry Sullivan (baseball) (1888–1919), American pitcher Harry Sullivan (footballer) (1932–2017), Australian rules footballer Harry Sullivan (politician) (1921–1977), Australian politician Harry Sullivan (Doctor Who), fictional character in the British science-fiction series HSTikkyTokky, British YouTuber
See also Henry Sullivan (disambiguation)