F9

F9, F09, F.IX, F 9 or F-9 may refer to:

==Transport and vehicles== EMD F9, a locomotive in the 1950s F-9 Flying Fortress, a variant of the B-17 Flying Fortress F9C Sparrowhawk, a biplane parasite fighter from the 1930s Falcon 9, a rocket of SpaceX Falconar F9A, a Canadian homebuilt aircraft design Farrier F-9, a New Zealand trimaran sailboat Fokker F.IX, a 1929 Dutch airliner Frontier Airlines, IATA code F9, an American low-cost carrier Grumman F9F Panther, a United States Navy fighter aircraft Grumman F-9 Cougar, a swept wing version of the F9F Panther LSWR F9 class, British locomotives of the Southern Railway Watsons Bay ferry services, numbered F9, a ferry route in Sydney, Australia