| Year: | 1981 |
| Team: | Humboldt State Lumberjacks |
| Sport: | football |
| Conference: | Far Western Conference |
| Short Conf: | FWC |
| Record: | 6–4 |
| Conf Record: | 3–2 |
| Head Coach: | Bud Van Deren |
| Hc Year: | 16th |
| Stadium: | Redwood Bowl |
The 1981 Humboldt State Lumberjacks football team represented Humboldt State University—now known as California State Polytechnic University, Humboldt—as a member of the Far Western Conference (FWC) during the 1981 NCAA Division II football season. Led by 16th-year head coach Bud Van Deren, the Lumberjacks compiled an overall record of 6–4 with a mark of 3–2 in conference play, tying for third place in the FWC.[1] The team outscored its opponents 204 to 198 for the season. Humboldt State played home games at the Redwood Bowl in Arcata, California.