| Year: | 2009 |
| Team: | UC Davis Aggies |
| Sport: | football |
| Conference: | Great West Conference |
| Short Conf: | GWC |
| Record: | 6–5 |
| Conf Record: | 3–1 |
| Head Coach: | Bob Biggs |
| Hc Year: | 17th |
| Off Coach: | Mike Moroski |
| Oc Year: | 17th |
| Def Coach: | Mark Johnson |
| Dc Year: | 1st |
| Stadium: | Aggie Stadium |
| Champion: | GWC champion |
The 2009 UC Davis football team represented the University of California, Davis as a member of the Great West Conference (GWC) during the 2009 NCAA Division I FCS football season. Led by 17th-year head coach Bob Biggs, UC Davis compiled an overall record of 6–5 with a mark of 3–1 in conference play, winning the GWC title. The team was outscored by its opponents 300 to 272 for the season. The Aggies played home games at Aggie Stadium in Davis, California.