C43

C43, C-43 or C.43 may refer to:

• Alfa Romeo C43, Formula One car
• Beech C-43 Traveler, an American biplane
• Bill C-43, several bills of the Parliament of Canada
• C43 road (Namibia)
• C43 torpedo, a Chinese torpedo
• Caldwell 43, a spiral galaxy
• Caudron C.43, a French biplane
• Hiram Cure Airfield in Eaton County, Michigan
• Marshall C43, a British bus
• Melanoma
• Mercedes-Benz C43 AMG, an automobile
• Petrov's Defence, a chess opening