The 2018 USC Trojans football team represented the University of Southern California in the 2018 NCAA Division I FBS football season. They played their home games at the Los Angeles Memorial Coliseum and competed as members of the South Division of the Pac-12 Conference. They were led by third-year head coach Clay Helton. On November 25, USC athletic director Lynn Swann announced that head coach Clay Helton would return in 2019 despite the disappointing season.