F1 (disambiguation)

F1 , F01, F.I, F.1 or F-1 may refer to any of the following:

In computers:
* Function 1 key, on a computer keyboard
* "F1", the name of one of the Office Assistants in the Microsoft Office suite of software

In army, military crafts and weapons:
* F1 grenade, a Soviet hand grenade used in World War II
* F 1 Hässlö, a former Swedish Air Force wing
* F-1 (rocket engine)
* F1 SMG, an Australian submachine gun
* Dassault Mirage F1, a French combat aircraft
* FCM F1, a 1940 French super-heavy tank
* Felixstowe F.1, a Seaplane Experimental Station-designed flying boat
* Fokker F.I (1917), a German fighter triplane
* Fokker F.I (1919), an abortive design that served for the 1916 Fokker F.II airliner construction
* HMS F1, an F-class submarine of the Royal Navy, launched in 1915
* HMS Kelly (F01), a 1938 British Royal Navy K-class destroyer
* Mitsubishi F-1, a fighter/attack aircraft of the Japan Air Self-Defense Force
* Sopwith Camel F.1, a 1916 British World War I single-seat fighter biplane
* USS "F-1" (SS-20), an F-class submarine of the United States Navyand also :
* FJ Fury an American Fighter Jet

In motor racing:
* Formula One racing
* Formula One (game), various video games reproducing the championship.
* F1 Powerboat Racing
* "F1 Racing", a Formula One magazine
* BriSCA Formula 1, a British stock-car racing formula
* McLaren F1, a sport car
* Spyker F1, a Formula One team

In railway :
* DSER Class F1, a Dublin and South Eastern Railway
* NCC Class F1, a Northern Counties Committee
* PRR F1, an American
* SP&S Class F-1, an American steam locomotives class

In science:
* F1 hybrid, a first generation hybrid seed or plant
* Area F1, a region in the macaque brain that is analogous to primary motor cortex
* the F₁ layer of the ionosphere
* F1 Score, a statistical performance measure of a test or classifier
* a tornado intensity rating on the Fujita scale, suggesting a moderately weak tornado
* "f"₁, the formant with the lowest frequency in acoustics and phonetics.
* F01 : Vascular dementia ICD-10 code

In miscellaneous:
* "F-1" (arcade game), an arcade game released by Atari Inc. in 1976
* F1 helmet, a French firefighting helmet
* F-01 (Michigan county highway)
* F-1 visa, a visa category to enter United States as a student
* F1 (Zimbabwe), a road in Zimbabwe
* BMW F01, an automobile platform expected to go into production in September 2008
* Canon F-1, a 1971 35mm single-lens reflex camera
* BYD F1, a Clone of Toyota Aygoand also :
* Serving area interface in telecommunication as the Main Feeder Cable
* Hotel Formule 1, a budget hotel chain in Europe
* Foundation Year 1, the first year of the UK Foundation Programme for postgraduate medical practitioners
* an "f one" or "F 1", slang for a first-degree felony
* Formula 1, an entry-level watch collection from Swiss watchmaker TAG Heuer