F12 may refer to:
Vehicles Aircraft Fokker F.XII, a Dutch airliner Larson F-12 Baby, an American sport biplane Lockheed YF-12, an American prototype interceptor aircraft Republic XF-12 Rainbow, an American prototype reconnaissance aircraft
Automobiles (cars and trucks) Alpina B6 (F12), a German grand tourer BMW 6 Series (F12), a German grand tourer DKW F12, a German saloon car Farmall F-12, an American tractor Ferrari F12 an Italian grand tourer Volvo F12, a Swedish truck
Farm tractors Farmall F-12, an American tractor
Ships , a Leander-class frigate of the Royal Navy , a K-class destroyer of the Royal Navy (F12), an upcoming Type 31 frigate. , a submarine of the Italian Regia Marina (Royal Navy)
Other uses F12 (classification), a disability sport classification F12 (gene), coding for coagulation factor XII F12 Developer Tools, built into Microsoft Internet Explorer and Microsoft Edge F 12 Kalmar, a former Swedish Air Force wing F12, a function key on a computer keyboard Flat-12, an automobile engine