Denison may refer to:
People Denison (name)
Places Denison, Iowa Denison, Kansas Denison, Texas, birthplace of Dwight D. Eisenhower Denison, Washington Denison University, in Granville, Ohio the English name for Kosinj, a valley and region in Croatia
Other uses Division of Denison, an Australian federal electoral division Division of Denison (state), a former Tasmanian electoral division Denison Mines, a Canadian mining company Denison smock, a combat jacket
See also Saint Denis of Paris (3rd-century–250), Christian martyr and saint Dennison (disambiguation)