| Year: | 1980 |
| Team: | Lamar Cardinals |
| Sport: | football |
| Conference: | Southland Conference |
| Short Conf: | Southland |
| Record: | 3–8 |
| Conf Record: | 1–4 |
| Head Coach: | Larry Kennan |
| Hc Year: | 2nd |
| Stadium: | Cardinal Stadium |
The 1980 Lamar Cardinals football team represented Lamar University as a member of the Southland Conference during the 1980 NCAA Division I-A football season. The Cardinals played their home games at Cardinal Stadium now named Provost Umphrey Stadium in Beaumont, Texas. Lamar finished the 1980 season with a 3–8 overall record and a 1–4 conference record. One highlight for the season was the highest attended game in the history of the stadium. 18,500 fans attended the September 13 game against Baylor.[1]