| Trégarantec | |
| Native Name: | Tregaranteg |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Trégarantec (Finistère).svg |
| Coordinates: | 48.5519°N -4.2928°W |
| Elevation Min M: | 32 |
| Elevation Max M: | 87 |
| Insee: | 29288 |
| Postal Code: | 29260 |
| Arrondissement: | Brest |
| Canton: | Lesneven |
| Mayor: | Yann Toudic[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | Lesneven Côte des Légendes |
| Area Km2: | 5.21 |
Trégarantec (pronounced as /fr/;) is a commune in the Finistère department of Brittany in north-western France.
Inhabitants of Trégarantec are called in French Trégarantécois.