Western Illinois University Marching Leathernecks
| WIU Marching Leathernecks | |
|---|---|
| School | Western Illinois University | 
| Location | Macomb, IL | 
| Conference | Missouri Valley Football | 
| Founded | 1904 | 
| Director | Dr. Matt Thomas (2010 - ) | 
| Members | 160 | 
| Fight song | "We're Marching On" | 
| Uniform | |
| [[File:Purple and white with gold sash, purple pants, purple Aussie hat with new paw print emblem, white gloves, and black shoes. |frameless|upright=1.25|center]] | |
| Website | www | 
The Western Illinois University Marching Leathernecks is the marching band for Western Illinois University in Macomb, Illinois. The group was formed in 1904.
This performing ensemble includes students from many different academic majors at the university. Membership is open to any student on the Macomb campus regardless of major and does not require an audition except for leadership positions like section leader, drum major, senior assistant, equipment manager, etc.