The 1999 USC Trojans football team represented the University of Southern California (USC) in the 1999 NCAA Division I-A football season. In their second year under head coach Paul Hackett, the Trojans compiled a 6-6 record (3–5 against conference opponents), finished in a tie for sixth place in the Pacific-10 Conference (Pac-10), and outscored their opponents by a combined total of 348 to 278.