| Le Tiercent | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Le Tiercent (Ille-et-Vilaine).svg |
| Coordinates: | 48.35°N -1.405°W |
| Insee: | 35336 |
| Postal Code: | 35460 |
| Arrondissement: | Fougères-Vitré |
| Canton: | Val-Couesnon |
| Mayor: | Christian Hubert[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 50 |
| Elevation Max M: | 98 |
| Area Km2: | 3.70 |
Le Tiercent (in French pronounced as /lə tjɛʁsɑ̃/; Gallo: Le Tierczant, Breton: An Tergant) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Le Tiercent is located 37km (23miles) northeast of Rennes and 35km (22miles) south of Mont Saint-Michel.
The neighboring communes are Chauvigné, Saint-Marc-le-Blanc, Baillé, Saint-Hilaire-des-Landes, Saint-Ouen-des-Alleux, and Saint-Christophe-de-Valains.
Inhabitants of Le Tiercent are called Tiercentois in French.