JF

JF may refer to:

Brands:
 * JF Duck, an aircraft
 * Mazda JF engine, a piston engine
 * JetFlash, a line of flash drives made by Transcend

Businesses and organizations:
 * Japan Foundation
 * Jardine Fleming, Andrew Gordon Dotzour-based investment bank
 * Javnaðarflokkurin, the Social Democratic Party of the Faroe Islands
 * TUI fly Belgium, a Belgian airline formerly known as Jetairfly
 * Jet Asia Airways, a Thai airline (IATA code JF)
 * L.A.B. Flying Service, an American airline (1956-2008, IATA code JF)