| Prinquiau | |
| Native Name: | Prevenkel |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Prinquiau (Loire-Atlantique).svg |
| Arrondissement: | Saint-Nazaire |
| Canton: | Blain |
| Insee: | 44137 |
| Postal Code: | 44260 |
| Mayor: | Jean-Pierre Blanc[1] |
| Term: | 2022 - 2026 |
| Intercommunality: | Estuaire et Sillon |
| Coordinates: | 47.3631°N -2.01°W |
| Elevation Min M: | 0 |
| Elevation Max M: | 70 |
| Area Km2: | 22.82 |
Prinquiau (in French pronounced as /pʁɛ̃kjo/; Occitan (post 1500);: Prevenkel) is a commune in the Loire-Atlantique department in western France.