The San Diego State Aztecs baseball team is the college baseball program that represents San Diego State University. The Aztecs compete in NCAA Division I as a member of the Mountain West Conference (MW). The team plays their home games at Tony Gwynn Stadium.

College baseball is baseball that is played on the intercollegiate level at institutions of higher education. In the United States, college baseball is sanctioned mainly by the National Collegiate Athletic Association (NCAA); in Japan, it is governed by the All Japan University Baseball Federation (JUBF).