Tull is a surname. Notable people with the surname include:
Edmund Tull (1870–1911), Hungarian artist
Fisher Tull (1934–1994), American musician
Jethro Tull (agriculturist) (1674–1740), English agricultural pioneer
Mustafa Wahbi et Tull (1897–1949), Jordanian poet
Patrick Tull (1941–2006), British actor
Walter Tull (1888–1918), British football player and soldier
Fictional characters:
Vernon Tull and Cora Tull, a fictional couple in the William Faulkner novel As I Lay Dying