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.

The 2015 NCAA Division I baseball tournament began on Friday, May 29, 2015, as part of the 2015 NCAA Division I baseball season. The 64-team double-elimination tournament concluded with the 2015 College World Series in Omaha, Nebraska, which began on June 13 and ended on June 24 with the Virginia Cavaliers upsetting the defending champion Vanderbilt Commodores 4–2 in the decisive Game 3 and thereby avenging their CWS Finals loss to Vanderbilt the previous year.