| Year: | 1959 |
| Team: | Western Illinois Leathernecks |
| Sport: | football |
| Conference: | Interstate Intercollegiate Athletic Conference |
| Short Conf: | IIAC |
| Record: | 9–0 |
| Conf Record: | 6–0 |
| Head Coach: | Lou Saban |
| Hc Year: | 3rd |
| Stadium: | Hanson Field |
| Champion: | IIAC champion |
The 1959 Western Illinois Leathernecks football team represented Western Illinois University as a member of the Interstate Intercollegiate Athletic Conference (IIAC) during the 1959 college football season. They were led by third-year head coach Lou Saban and played their home games at Hanson Field. The Leathernecks finished the season with a perfect 9–0 record overall and a 6–0 record in conference play, winning the IIAC title.[1] Despite its record, the team was unable to participate in a postseason bowl game, as the Illinois state teachers college board banned its schools from participating in postseason sporting events.[2]