| Cook Mountain Formation | |
| Type: | Formation |
| Age: | Paleogene |
| Period: | Paleogene |
| Namedfor: | Cook Mountain, Houston County, Texas |
| Namedby: | William Kennedy[1] |
| Region: | Alabama, Louisiana, Mississippi, Texas |
| Country: | United States |
| Underlies: | Cockfield Formation |
| Overlies: | Sparta Formation |
The Cook Mountain Formation is a geologic formation in Alabama. It preserves fossils dating back to the Paleogene period.