| Year: | 1984 |
| Team: | Northwestern State Demons |
| Sport: | football |
| Conference: | Gulf Star Conference |
| Short Conf: | GSC |
| Record: | 7–4 |
| Conf Record: | 4–1 |
| Head Coach: | Sam Goodwin |
| Hc Year: | 2nd |
| Def Coach: | John Thompson |
| Dc Year: | 2nd |
| Stadium: | Harry Turpin Stadium |
| Champion: | Gulf Star co-champion |
The 1984 Northwestern State Demons football team was an American football team that represented Northwestern State University during the 1984 NCAA Division I-AA football season as a member of the Gulf Star Conference (GSC). Led by second-year head coach Sam Goodwin, the Demons compiled an 7–4 record, with a mark of 4–1 in conference play, and finished as GSC co-champion.