| Year: | 1998 |
| Team: | Southwest Texas State Bobcats |
| Sport: | football |
| Conference: | Southland Football League |
| Short Conf: | Southland |
| Record: | 4–7 |
| Conf Record: | 2–5 |
| Head Coach: | Bob DeBesse |
| Hc Year: | 2nd |
| Off Coach: | Scott Bruning |
| Oc Year: | 2nd |
| Def Coach: | David Bailiff |
| Dc Year: | 2nd |
| Stadium: | Bobcat Stadium |
The 1998 Southwest Texas State Bobcats football team was an American football team that represented Southwest Texas State University (now known as Texas State University) during the 1998 NCAA Division I-AA football season as a member of the Southland Football League. In their second year under head coach Bob DeBesse, the team compiled an overall record of 4–7 with a mark of 2–5 in conference play.