The 1928 USC Trojans football team was an American football team that represented the University of Southern California in the Pacific Coast Conference (PCC) during the 1928 college football season. In their fourth season under head coach Howard Jones, the Trojans compiled a 9–0–1 record (4–0–1 against PCC opponents), outscored opponents by a total of 267 to 59, and won the PCC championship.