F2

F2, F02, F.II, F.2, F 2 or F-2 may refer to :
* F-2, a psychedelic drug
* F₂, the chemical formula for fluorine gas
* F-2 Banshee, a carrier-based jet fighter aircraft of the 1950s
* F 2 Hägernäs, a former Swedish Air Force wing
* F2 hybrid, a type of crossing in classical genetics
* F2 tornado, a rating of tornado on the Fujita scale
* F2 (Zimbabwe), a road in Zimbabwe
* F₂ Layer of the ionosphere
* Beechcraft F-2 Expeditor
* 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
* DSER Class F2, a Dublin and South Eastern Railway
* EMD F2, a locomotive model
* Fairey F.2, a 1917 British fighter prototype
* Felixstowe F.2, a 1917 British First World War flying boat
* Flanders F.2, a 1911 British experimental single-seat monoplane aircraft
* Fokker F.II, a 1919 German early airliner
* HMS "F2", a F-class submarine of the Royal Navy
* Hunter F 2, a 1953 Sapphire 101 engine Hawker Hunter fighter aircraft variant
* Metropolitan-Vickers F.2, a 1941 British early turbojet engine
* Mitsubishi F-2, a Japanese fighter aircraft based on the F-16 Fighting Falcon
* Nikon F2, a professional SLR camera
* RAF Tornado F.2, the first generation of the Panavia Tornado Air Defence Variant
* PRR F2, an American
* RAF Typhoon F2, a single seat fighter variant of the Eurofighter Typhoon fighter aircraft
* Taito F2 System
* USS "F-2" (SS-21), an F-class submarine of the United States Navyand also :
* Formula Two racing
* Fly Air IATA airline designator
* a standard white point for cool white fluorescent lamps
* a tornado intensity rating on the Fujita scale, suggesting a moderately strong tornado
* a brain region located in the frontal cortex of the macaque
* $mathbb\; F\_2$, the Galois field with two elements, also denoted as GF(2)
* Fallout 2
* F2 Castlereagh Freeway, one of the names used for the North Western Expressway in Sydney
* F2 in telecommunication is also referred to as the Secondary Feeder Cable
* Foundation Year 2, the second year of the UK Foundation Programme for postgraduate medical practitioners
* a function key, on a computer keyboard
* F02 : Dementia in other diseases classified elsewhere code