F56

F56 may refer to:


 * F56 (classification), a disability sport classification for disability athletics for people who compete in field events from a seated position
 * Farman F.56, a French pusher biplane reconnaissance aircraft
 * HMS Argonaut (F56), a Leander-class frigate that served with the Royal Navy from 1967 to 1993
 * HMS Transylvania (F56), a British Anchor Line passenger liner later converted into an armed merchant cruiser, pennant F56 during World War II
 * HMCS Prince Robert (F56), a Canadian passenger and cargo ship, served as an armed merchant cruiser and later anti-aircraft cruiser in World War II
 * Wright GR-1820-F-56 Cyclone, an aircraft engine
 * The third generation of the 3-door BMW MINI Hatch, codenamed F56