F2

F2, F.II or similar may refer to:

Science and mathematics

• F₂, the chemical formula for fluorine
• or GF(2), in mathematics, the Galois field of two elements
• F2, a category in the Fujita scale of tornado intensity
• F2 hybrid, a type of crossing in classical genetics
• F2 layer, a stratum of the Earth's ionosphere
• F-2 mycotoxin or zearalenone, a chemical produced by fungi
• NIST-F2, an atomic clock

Medicine

• F2 or Foundation Year 2, part of the UK Foundation Programme for postgraduate medical practitioners
• F-2 (drug), a psychedelic drug
• F2-isoprostane, a compound formed in vivo from fatty acids
• F2 gene, present on human chromosome 11, encodes for thrombin

Films

• F2: Fun and Frustration, a 2019 Indian Telugu language film starring Venkatesh and Varun Tej

Technology

• F2, a function key on a computer keyboard
• F2 or flat twin engine, a type of two-cylinder internal combustion engine
• Anik F2, a Canadian geostationary communications satellite
• Nikon F2, a professional SLR camera

Transportation

Aviation

• Fly Air, IATA designator F2, a Turkish private airline
• Fieseler F2 Tiger, a German single-seat aerobatic biplane
• Flanders F.2, a 1911 British experimental single-seat monoplane aircraft
• Fokker F.II, a 1919 German early airliner
• Metropolitan-Vickers F.2, a 1941 British early turbojet engine

Rail

• EMD F2, a class of GM diesel freight locomotive built in 1946
• H&BR Class F2, a class of 0-6-2T steam locomotives of the Hull and Barnsley Railway
• PRR F2, a classification of Mogul steam locomotive on the Pennsylvania Railroad

Road

• Formula Two, a category in motor racing
• Alta F2, a 1952 British racing car
• DKW F2, a 1930s German small car
• Marussia F2, a Russian large luxury car

Military

Air

• Beechcraft F-2 Expeditor, an American twin engine reconnaissance aircraft
• Blackburn F.2 Lincock, a 1928 British single-seat lightweight fighter
• Bristol F.2 Fighter, a 1916 British two-seat biplane fighter and reconnaissance aircraft
• Dassault Mirage F2, a 1960s French prototype two-seat attack fighter
• Fairey F.2, a 1917 British fighter prototype
• Felixstowe F.2, a 1917 British First World War flying boat
• Hunter F 2, a 1953 Hawker Hunter fighter aircraft variant
• Lübeck-Travemünde F.2, early German reconnaissance floatplane
• McDonnell F-2 Banshee, a carrier-based jet fighter aircraft of the 1950s
• Mitsubishi F-2, a Japanese fighter aircraft, based on the F-16 Fighting Falcon
• RAF Tornado F2, a long-range, twin-engine swing-wing interceptor
• F 2 Hägernäs, a former Swedish Air Force wing

Sea

• HMS F2, an F class First World War submarine of the Royal Navy
• USS F-2 (SS-21), a 1910s F-class submarine of the United States Navy
• 20 mm modèle F2 gun, a French naval gun

Land

• F2 81mm Mortar, an Australian weapon
• FR F2 sniper rifle, the standard sniper rifle of the French military
• KMW F2, a German modular wheeled armoured vehicle

Other uses

• F2 (classification), a wheelchair sport classification
• F-2 visa, a U.S. visa type for dependents of students

See also

• 2F (disambiguation)
• FII (disambiguation)