C34 or C-34 may refer to: Vehicles Aircraft Castel C.34 Condor, a French sailplane Cessna C-34, an American civil utility aircraft Douglas C-34, an American military transport aircraft
Automobiles Nissan Laurel C34, a Japanese sedan Sauber C34, a Swiss Formula One car
Locomotives New South Wales C34 class locomotive, an Australian steam locomotive
Ships , a C-class submarine of the Royal Navy , a Tiger-class light cruiser of the Royal Navy
Other uses C-34 Mosquito Impoundment Project, a pest-control project in Florida C34 road (Namibia) Caldwell 34, a supernova remnant in the constellation Cygnus King's Knight's Gambit, a chess opening Lung cancer Special Committee on Peacekeeping Operations of the United Nations