Jazz (Jazz Aviation LP), is a Canadian regional airline based at Halifax Stanfield International Airport in Enfield, Halifax Regional Municipality, Nova Scotia, and is a wholly owned subsidiary of Chorus Aviation. Jazz Aviation provides regional and charter airline services in Canada and the United States, primarily under contract to Air Canada using the brand name Air Canada Express, and also as Jazz Charters.

It is Canada's third largest airline in terms of fleet size (but not in terms of passengers carried annually, number of employees or destinations served). Its Air Canada Express operations serve 79 destinations in Canada and the United States. Under a Capacity Purchase Agreement (CPA), Air Canada sets the Jazz route network and flight schedule, and purchases all of Jazz’s seat capacity based on predetermined rates. Its main base is Halifax Stanfield International Airport, with hubs at Toronto Pearson International Airport, Victoria International Airport, Vancouver International Airport, Montréal-Pierre Elliott Trudeau International Airport, and Calgary International Airport.

Prior to April 2011, Air Canada's regional operations were branded as Air Canada Jazz. Following the award of a contract to Sky Regional Airlines, the Air Canada Express brand was introduced as an umbrella for all regional operations. The Jazz brand is now entirely managed by Jazz Aviation LP.

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