The 1975 USC Trojans football team represented the University of Southern California (USC) in the 1975 NCAA Division I football season. In their 15th year under head coach John McKay, the Trojans compiled an 8–4 record (3–4 against conference opponents), finished in fifth place in the Pacific-8 Conference (Pac-8), and outscored their opponents by a combined total of 247 to 140. The team was ranked #17 in the final AP Poll and #19 in the final UPI Coaches Poll.