| Saint-Nicolas-du-Tertre | |
| Native Name: | Sant-Nikolaz-ar-Roz |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Nicolas-du-Tertre (Morbihan).svg |
| Coordinates: | 47.8039°N -2.2205°W |
| Insee: | 56230 |
| Postal Code: | 56910 |
| Arrondissement: | Vannes |
| Canton: | Moréac |
| Mayor: | Mickaël Le Goué[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC de l'Oust à Brocéliande |
| Elevation Min M: | 22 |
| Elevation Max M: | 107 |
| Area Km2: | 12.93 |
Saint-Nicolas-du-Tertre (in French pronounced as /sɛ̃ nikɔla dy tɛʁtʁ/;) is a commune in the Morbihan department of Brittany in north-western France.[2]