The Calgary Cannons were a minor league baseball team located in Calgary, Alberta, for 18 seasons, from 1985 until 2002. They were a member of the AAA Pacific Coast League (PCL) and played at Foothills Stadium. The Cannons displaced the Calgary Expos, who played in the rookie level Pioneer League from 1977 until 1984. The team was previously known as the Salt Lake City Gulls before being relocated to Calgary. Following the 2002 season, the team moved to Albuquerque, New Mexico, where they became the Isotopes.

Triple-A has been the highest level of play in Minor League Baseball in the United States since 1946. Currently, two leagues operate at the Triple-A level, the International League (IL) and the Pacific Coast League (PCL). There are 30 teams, one per each Major League Baseball (MLB) franchise, with 20 in the IL and 10 in the PCL. Triple-A teams are generally located in smaller cities as well as larger metropolitan areas without MLB teams, such as Austin, Jacksonville, Columbus, and Indianapolis. Four Triple-A teams play in the same metro areas as their parent clubs.