F12 3463914 198816965 2008-03-17T08:46:17Z Nono64 2313206 +fr '''F12''' or '''F-12''' may refer to * [[Factor XII]], a [[coagulation factor]] * [[Lockheed YF-12]], a prototype interceptor aircraft first flown in 1962 * [[XF-12 Rainbow]], a prototype reconnaissance aircraft built in the 1940s * [[function key]], on a computer keyboard {{disambig}} [[fr:F12]]