Trans-Canada Air Lines (also known as TCA in English, and Air Canada in French) was a Canadian airline that operated as the country's flag carrier.

In 1964, an Act of Parliament proposed by Jean Chrétien changed the name of Trans-Canada Air Lines to "Air Canada," which was already in use as the airline's French-language name, effective 1 January 1965. In 1978, Air Canada was divested by parent CNR and became a separate Crown corporation. Air Canada was privatized in 1989.