F3

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Computing

Douglas F-3 Havoc, a photographic reconnaissance plane
Douglas F3D Skyknight (later F-10 Skyknight), a Douglas twin engine, mid-wing jet fighter
F 3 Malmslätt, a former Swedish Air Force unit
Felixstowe F.3, a 1917 British First World War flying boat
Hannover F.3, a World War I German prototype escort fighter
HMS Cossack (F03), a 1937 British Royal Navy destroyer
HMS F3, a British F class submarine
McDonnell F3H Demon (later F-3 Demon), a United States Navy carrier-based jet fighter
Mk F3 155mm, French self-propelled gun
RAF Tornado F3, a British fighter
USS F-3 (SS-22), a United States Navy submarine
A future Japanese fighter jet (F-3 or F-X) based on the i3 conceptual jet fighter and Mitsubishi X-2 prototype

BYD F3, an automobile
EMD F3, a North American cab-style diesel locomotive introduced in 1945
F3 (Istanbul Metro), a funicular railway line in Istanbul, Turkey
F3 class, project name for the mega-cruise ship Norwegian Epic
Faso Airways IATA airline designator
Fokker F.III, a 1921 Dutch single-engine high-winged monoplane aircraft
Hinterhoeller F3, a yacht design by Canadian boat builder Hinterhoeller Yachts
MV Agusta F3 series, an Italian sports motorcycle
Spyder F3, a model of the three-wheeled motorcycle BRP Can-Am Spyder Roadster
Sydney Ferries' Parramatta River ferry services, known as the F3
Pacific Motorway (Sydney–Newcastle), formerly Sydney–Newcastle Freeway and commonly known as F3
LNER Class F3, a class of British steam locomotives

F3 (Fisz Emade jako Tworzywo Sztuczne album)
F3 (manga) (F³: Frantic, Frustrated & Female), a hentai manga series
F3 (film), a 2022 Indian Telugu-language film by Anil Ravipudi, a sequel to F2 (2019)

F3 (classification), a wheelchair sport classification
F3 (font format), created by Folio, Inc
F3 (gene), a protein
F3 isoprostane
F3 Nation, a network of free peer-led workouts for men in the U.S.
Form, fit and function, an engineering term relating to design processes
Formula Three, a class of automobile racing
Forsmark 3, a unit at Forsmark Nuclear Power Plant, Sweden
Motorola Motofone F3, a mobile phone
Nikon F3, an SLR camera
Taito F3 System, a 1992 arcade system board
A tornado intensity rating on the Fujita scale
F₃, a type of formant in speech science
F3, an EEG electrode site according to the 10-20 system
F3 Derby, association football rivalry between Central Coast Mariners and Newcastle Jets