| Year: | 2011 |
| Team: | Cal Poly Mustangs |
| Sport: | football |
| Conference: | Great West Conference |
| Short Conf: | GWC |
| Record: | 6–5 |
| Conf Record: | 3–1 |
| Head Coach: | Tim Walsh |
| Hc Year: | 3rd |
| Cooff Coach1: | Brian Cook |
| Cooc1 Year: | 3rd |
| Cooff Coach2: | Saga Tuitele |
| Cooc2 Year: | 3rd |
| Off Scheme: | Triple option |
| Def Coach: | Greg Lupfer |
| Dc Year: | 3rd |
| Def Scheme: | 3–4 |
| Stadium: | Alex G. Spanos Stadium |
| Champion: | GWC co-champion |
The 2011 Cal Poly Mustangs football team represented California Polytechnic State University, San Luis Obispo as member of the Great West Conference (GWC) during the 2011 NCAA Division I FCS football season. Led by third-year head coach Tim Walsh, Cal Poly compiled an overall record of 6–5 with a mark of 3–1 in conference play, sharing the GWC with North Dakota. The Mustangs played home games at Alex G. Spanos Stadium in San Luis Obispo, California.
With a win over South Dakota on October 29, Cal Poly clinched a share of the conference championship, the program's fourth conference title since the GWC's creation in 2004. The Mustangs became a football-only member of the Big Sky Conference in 2012.
See also: 2011 San Diego State Aztecs football team.
See also: 2011 Montana Grizzlies football team.
See also: 2011 South Dakota State Jackrabbits football team.
See also: 2011 Northern Illinois Huskies football team.
See also: 2011 Central Oklahoma Bronchos football team.
See also: 2011 Southern Utah Thunderbirds football team.
See also: 2011 North Dakota Fighting Sioux football team.
See also: 2011 South Dakota Coyotes football team.
See also: 2011 UC Davis Aggies football team and Battle for the Golden Horseshoe.
See also: 2011 Eastern Washington Eagles football team.
See also: 2011 South Alabama Jaguars football team.