Estadio de Beisbol Calimax (formerly known as Estadio Nacional de Tijuana) is a professional baseball stadium located in Tijuana, Baja California, in Mexico with a capacity of 18,500, all seated. It was built in 1976 and is named after a supermarket chain based in Baja California. It was expanded in 2006 to its current capacity.
In the past it has also been the site of several lower division football clubs in the Mexican League System. The ballpark has played host to Liga Mexicana de Beisbol (Mexican Baseball League) teams, the Tijuana Toros in 2004 and the Tijuana Potros from 2005 to 2008. It played host to the Tijuana Cimarrones of the Golden Baseball League for one season in 2010.