The 1974 Cal Poly Mustangs football team represented California Polytechnic State University, San Luis Obispo as a member of the California Collegiate Athletic Association (CCAA) during the 1974 NCAA Division II football season. Led by seventh-year head coach Joe Harper, Cal Poly compiled an overall record of 5–4–1 with a mark of 2–1–1 in conference play, placing second in the CCAA. The Mustangs played home games at Mustang Stadium in San Luis Obispo, California.