| Louisville Limestone | |
| Type: | Formation |
| Age: | Homerian - Ludfordian[1] |
| Period: | Silurian |
| Region: | Indiana, Kentucky, and Ohio |
| Country: | United States |
| Underlies: | Jeffersonville Limestone and Wabash Formation |
| Overlies: | Waldron Shale |
The Louisville Limestone is a geologic formation in Ohio. It preserves fossils dating back to the Silurian period.