The 1975 Arizona State Sun Devils football team represented Arizona State University in the 1975 NCAA Division I football season.

Led by head coach Frank Kush, the Sun Devils were undefeated in the regular season (11–0), perfect in Western Athletic Conference play (7–0), and won the Fiesta Bowl.

After beating Nebraska, 17–14, Kush said, "From the players' standpoint, this was probably the most important game since I have been here.

This remains the highest ranked finish in Arizona State football history in both the AP and Coaches Poll.

Despite the AP and Coaches polls ranking ASU as #2, the Sporting News and The National Championship Foundation (whom were major selection polls at the time) ranked ASU as the #1 team of the nation.