| Year: | 1989 |
| Team: | UC Davis Aggies |
| Sport: | football |
| Conference: | Northern California Athletic Conference |
| Short Conf: | NCAC |
| Record: | 8–3 |
| Conf Record: | 5–0 |
| Head Coach: | Bob Foster |
| Hc Year: | 1st |
| Stadium: | Toomey Field |
| Champion: | NCAC champion |
| Bowl: | NCAA Division II First Round |
| Bowl Result: | L 23–28 vs. |
The 1989 UC Davis football team represented the University of California, Davis as a member of the Northern California Athletic Conference (NCAC) during the 1989 NCAA Division II football season. Led by first-year head coach Bob Foster, the Aggies compiled an overall record of 8–3 with a mark of 5–0 in conference play, winning the NCAC title for the 19th consecutive season. UC Davis advanced to the NCAA Division II Football Championship playoffs, where they lost to in the first round. 1989 was the 20th consecutive winning season for the Aggies and their 5–0 record in NCAC play extended the team's conference winning streak to 46 games dating back to the 1981 season. UC Davis outscored its opponents 303 to 202 for the season. The Aggies played home games at Toomey Field in Davis, California.