| Louis Ost | |
| Birth Date: | 8 March 1893 |
| Birth Place: | Newark, New Jersey, U.S. |
| Death Place: | Elizabeth, New Jersey, U.S. |
| Coach Sport1: | Football |
| Coach Years2: | 1922 |
| Coach Team2: | Hillsdale |
| Coach Sport3: | Basketball |
| Coach Years4: | 1922–1923 |
| Coach Team4: | Hillsdale |
| Overall Record: | 3–5 (football) 7–13 (basketball) |
Louis Ost Jr. (March 8, 1893 – July 11, 1960) was an American football coach.[1] [2] He served as the head football coach at Hillsdale College in Hillsdale, Michigan for one season, in 1922, compiling a record of 3–5.[3] Ost was also the head basketball coach at Hillsdale for one season, in 1922–23, tallying a mark of 7–13.
Ost married Blossom Stewart on December 15, 1922 in Hillsdale. He died in 1960.