F3

F3 or F03 may refer to:

Computing

• A function key on a computer keyboard
• F3 (language), the working name for JavaFX Script, a scripting language
• Fat-Free Framework, a PHP web application framework

Military

• Hannover F.3, a World War I German prototype escort fighter
• Felixstowe F.3, a 1917 British First World War flying boat
• USS F-3 (SS-22), F-class submarine of the United States Navy
• HMS F3, a British F class submarine
• HMS Cossack (F03), a 1937 British Royal Navy Tribal-class destroyer
• F-3 Havoc, a photographic reconnaissance version of the Douglas A-20 Havoc
• F3D Skyknight (later F-10 Skyknight), a Douglas twin engine, mid-wing jet fighter
• F3H Demon (later F-3 Demon), a carrier based jet fighter of the United States Navy
• RAF Tornado F3
• F 3 Malmslätt, a former Swedish Air Force unit
• A future Japanese fighter jet based on the Mitsubishi ATD-X prototype

Transportation

• Fokker F.III, a 1921 Dutch single-engined high-winged monoplane aircraft
• F3 (Zimbabwe), a road in Zimbabwe
• The former designation of the Sydney–Newcastle Freeway
• BYD F3, an automobile produced by BYD Auto
• Faso Airways IATA airline designator
• F3 class, a project name for an upcoming class of Norwegian Cruise Lines mega-cruise ships
• Sydney Ferries' Parramatta River ferry services, known as the F3

Railroad

• PRR F3, an American PRR 2-6-0 steam locomotive
• EMD F3, a North American cab-style diesel locomotive introduced in 1945

Arts

Music

• F3 (Fisz Emade jako Tworzywo Sztuczne album)

Film

• F³ (Frantic, Frustrated and Female), a hentai anime series

Sports

• Formula Three, a class of racing

Other

• F3 (font format), a font format created by Folio, Inc
• F3 (gene), a protein present in subendothelial tissue, platelets, and leukocytes
• F3 isoprostane, a type of isoprostane
• F3 Convention, a furry convention in Missouri.
• Forsmark 3, unit 3 at Forsmark Nuclear Power Plant, Sweden
• Motorola Motofone F3, a mobile phone
• Nikon F3, a professional SLR camera
• Taito F3 System, a 1992 arcade system board released by Taito
• Fallout 3, 2008 open world RPG video game
• Form, fit and function, an engineering term relating to design processes
• A tornado intensity rating on the Fujita scale, suggesting a strong tornado
• F03, the ICD-10 code for unspecified dementia
• In speech science: third formant
• F3 (Fitness, Fellowship and Faith), a men's group started in Charlotte, North Carolina