| Chalmer Ault | |
| Position: | Tackle Guard |
| Birth Date: | July 10, 1900 |
| Birth Place: | Jacobsburg, Ohio, U.S. |
| Death Place: | Buckhannon, West Virginia, U.S. |
| Height Ft: | 5 |
| Height In: | 9 |
| Weight Lb: | 195 |
| High School: | Moundsville |
| College: | West Virginia Wesleyan |
| Pastteams: | |
| Statlabel1: | Games |
| Statvalue1: | 3 |
| Pfr: | A/AultCh20 |
Chalmer Augustus Ault (July 10, 1900 – May 18, 1979) was an American professional football player who was a tackle and guard in the National Football League (NFL) for the Cleveland Bulldogs. Prior to his professional career, Ault played college football for the West Virginia Wesleyan Bobcats.