| Nanthiat | |
| Commune Status: | Commune |
| Arrondissement: | Nontron |
| Canton: | Thiviers |
| Insee: | 24305 |
| Postal Code: | 24800 |
| Mayor: | Paul Meynier[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 45.4089°N 0.9864°W |
| Elevation M: | 260 |
| Elevation Min M: | 136 |
| Elevation Max M: | 313 |
| Area Km2: | 11.12 |
Nanthiat (in French pronounced as /nɑ̃tja/; Occitan (post 1500);: Nantiac) is a commune in the Dordogne department in Nouvelle-Aquitaine in southwestern France.