CA may stand for: Circa (ca.) Class A People and organizations Air China, IATA airline designator (CA) Bureau of Consular Affairs, a division of the US Department of State CA, Inc. (formerly known as Computer Associates) Canadian Academy, an international school in Kobe, Japan Canadian Alliance, a former Canadian political party C&A stores Carmelo Anthony, NBA player Cary Academy, a North Carolina school Catamarca, a province in Argentina Cayman Airways, airline Central Administr… (More on Ca)