The 1983 USC Trojans football team represented the University of Southern California (USC) in the 1983 NCAA Division I-A football season. In their first year under head coach Ted Tollner, the Trojans compiled a 4–6–1 record (5–2 against conference opponents), finished in fourth place in the Pacific-10 Conference (Pac-10), and were outscored by their opponents by a combined total of 238 to 210.