Triple-A or Class AAA is the highest level of play in Minor League Baseball in the United States and Mexico. Before 2008, Triple-A leagues also fielded teams in Canada. A total of 30 Triple-A teams play in the Pacific Coast and International leagues, replacing the Triple-A East and Triple-A West, with 20 teams in the East and 10 teams in the West. Triple-A teams are typically located in large metropolitan areas that do not have Major League Baseball teams, such as Austin, Jacksonville, Columbus, and Charlotte.
The Triple-A classification was created before the 1946 season. Prior to then, the top level of the minors had been designated as Double-A since 1912. The modern Double-A classification also dates to 1946, when the former Class A1 level was renamed.