The 2018 San Diego State Aztecs football team represented San Diego State University in the 2018 NCAA Division I FBS football season.

The Aztecs were led by eighth-year head coach Rocky Long and played their home games at SDCCU Stadium.

[1] Sources: Listed in the order that they were released During the Mountain West media days held July 24–25 at the Cosmopolitan on the Las Vegas Strip, the Aztecs were predicted to finish in second place in the West Division.

[7] The Aztecs had three players selected to the preseason all-Mountain West team.

at SDCCU Stadium, San Diego No scoring plays