Formula One racing

F1 hybrid, first generation hybrid seed or plant

McLaren F1, a Supercar based on Formula One technology

Dassault Mirage F1, a French combat aircraft

Function 1 key, on a computer keyboard

"F1", the name of one of the Office Assistants in the Microsoft Office suite of software

Formula 1, an entry-level watch collection from Swiss watchmaker TAG Heuer

A tornado intensity rating on the Fujita scale, suggesting a moderately weak tornado

F-1 American Fighter Jet

F-1 (rocket engine)

Area F1, a region in the macaque brain that is analogous to primary motor cortex

An "f one" or "F 1", slang for a first-degree felony

Mitsubishi F-1, fighter/attack aircraft of the Japan Air Self-Defense Force

F1 Powerboat Racing

BriSCA Formula 1, a British stock-car racing formula.

F1 Racing, a Formula One magazine

USS F-1 (SS-20), an F-class submarine of the United States Navy

F-1 visa, visa category to enter United States as a student

F1 grenade, a Soviet hand grenade used in World War II

F1 SMG - Australian submachine gun

F-1 (arcade game), an arcade game released by Atari Inc. in 1976.

F1 helmet - French firefighting helmet

F1 Score, a statistical performance measure of a test or classifier

Formula One (game), various video games reproducing the championship.

HMS F1, an F-class submarine of the Royal Navy, launched in 1915