| Big Clifty, Kentucky | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA Kentucky#USA |
| Pushpin Label: | Big Clifty |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kentucky |
| Subdivision Type2: | County |
| Subdivision Name2: | Grayson |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.74 |
| Area Land Km2: | 3.73 |
| Area Water Km2: | 0.01 |
| Population As Of: | 2020 |
| Population Total: | 367 |
| Population Density Km2: | 98.43 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CST |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 397 |
| Coordinates: | 37.5456°N -86.1536°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 42712 |
| Blank Name: | FIPS code |
| Blank Info: | 21-06508 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 487153 |
| Area Total Sq Mi: | 1.44 |
| Area Land Sq Mi: | 1.44 |
| Area Water Sq Mi: | 0.01 |
| Population Density Sq Mi: | 254.86 |
Big Clifty is an unincorporated community and census-designated place (CDP) in Grayson County, Kentucky, United States.
Clifty Creek crosses U.S. Highway 62 and the P & L railroad several miles to the southwest of Big Clifty. It is said that travelers named the town due to the limestone cliffs that arose on the sides of Clifty Creek.