| Aucaleuc | |
| Native Name: | Oskaleg |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Aucaleuc 22.svg |
| Coordinates: | 48.4569°N -2.1283°W |
| Insee: | 22003 |
| Postal Code: | 22100 |
| Arrondissement: | Dinan |
| Canton: | Dinan |
| Mayor: | Christophe Ollivier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Dinan Agglomération |
| Elevation Min M: | 68 |
| Elevation Max M: | 120 |
| Area Km2: | 6.38 |
Aucaleuc (pronounced as /fr/; br|Oskaleg; Gallo: Laugaloec) is a commune in the Côtes-d'Armor department of Brittany in north-western France.
The inhabitants of Aucaleuc are known as Aucaleuens in French.