F11 or F-11 may refer to:
Military F 11 Nyköping, a Swedish Air Force wing F-11 Tiger, a 1954 U.S. Navy jet fighter originally designated F11F F11C Goshawk, a 1932 U.S. Navy biplane fighter Hughes XF-11, a 1946 U.S. Army Air Forces reconnaissance aircraft prototype , a submarine of the Italian Regia Marina (Royal Navy) in commission from 1916 to 1919
Science and academia Trichlorofluoromethane, a refrigerant used before 1995 Factor XI, a clotting agent found in blood
Sports F11 (classification), a classification in para-athletics
Technology , a function key on a computer keyboard (enters and exits fullscreen mode in many web browsers) Fujifilm FinePix F11, a digital camera model
Transportation Chery F11, a 2008 Chinese Chery Automobile model Fairchild F-11 Husky, a 1946 Canadian bush plane Falconar F11 Sporty, a Canadian amateur-built aircraft design Fokker F.11, a 1928 flying boat
Other uses Finger Eleven, a Canadian alternative rock band Forest Eleven, a group of rainforest countries
See also 11F (disambiguation)