| Year: | 2013 |
| Team: | Cal Poly Mustangs |
| Sport: | football |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 6–6 |
| Conf Record: | 5–3 |
| Head Coach: | Tim Walsh |
| Hc Year: | 5th |
| Off Coach: | Saga Tuitele |
| Oc Year: | 5th |
| Off Scheme: | Spread triple-option |
| Def Coach: | Josh Brown |
| Dc Year: | 2nd |
| Def Scheme: | Multiple 4–3 |
| Stadium: | Alex G. Spanos Stadium |
The 2013 Cal Poly Mustangs football team represented California Polytechnic State University, San Luis Obispo as member of the Big Sky Conference during the 2013 NCAA Division I FCS football season. Led by fifth-year head coach Tim Walsh, Cal Poly compiled an overall record of 6–6 with a mark of 5–3 in conference play, placing in a four-way tie for fourth in the Big Sky. The Mustangs played home games at Mustang Stadium in San Luis Obispo, California.
See also: 2013 San Diego Toreros football team.
See also: 2013 Fresno State Bulldogs football team.
See also: 2013 Colorado State Rams football team.
See also: 2013 Portland State Vikings football team.
See also: 2013 Yale Bulldogs football team.
See also: 2013 Weber State Wildcats football team.
See also: 2013 Montana Grizzlies football team.
See also: 2013 Northern Arizona Lumberjacks football team.
See also: 2013 UC Davis Aggies football team and Battle for the Golden Horseshoe.
See also: 2013 Sacramento State Hornets football team.
See also: 2013 Eastern Washington Eagles football team.
See also: 2013 Northern Colorado Bears football team.