| Coldwater Shale | |
| Type: | Formation |
| Age: | Mississippian |
| Period: | Mississippian |
| Region: | Indiana, Michigan, and Ohio |
| Country: | United States |
| Underlies: | Marshall Sandstone and New Providence Shale |
| Overlies: | Sunbury Shale |
The Coldwater Shale is a geologic formation in Michigan. It preserves fossils dating back to the Mississippian period.