F20

F20, F-20, F.XX, or F-XX may refer to:

• F20 manual transmission, a General Motors transmission
• Northrop F-20 Tigershark, a combat aircraft
• Farmall F-20, a model of Farmall tractor
• Fokker F.XX, a Dutch airliner
• Fujifilm FinePix F20, a digital camera
• HMS Gurkha (F20), a British ship
• Schizophrenia ICD-10 code
• BMW 1 Series (F20)
• A Honda F engine
• Fluorine-20 (F-20 or ²⁰F), an isotope of fluorine
• F20 (full, F20T12) is a very common size of 24" x 1.5" (610mm x 38mm) fluorescent lamp used in many parts of the world.