The Coopérative de Transport Maritime et Aérien (CTMA) is a Canadian transportation company, formed in 1944 to provide maritime and air links to the Magdalen Islands, Quebec.

Labelling itself Groupe CTMA, the company operates the seasonal ferry service from Cap-aux-Meules, Quebec in the Magdalen Islands to Souris, Prince Edward Island using the vessel MV Madeleine.

It also operates a seasonal passenger service from Montreal to Cap-aux-Meules using the vessel MS C.T.M.A. Vacancier, as well as a year-round cargo service from Montreal and Matane, Quebec to Cap-aux-Meules using the vessel MV C.T.M.A. Voyageur.

CTMA also operates a trucking company for transporting cargo to and from the Magdalen Islands, as well as providing air services.