| Saint-Gilles-Vieux-Marché | |
| Native Name: | Sant-Jili-ar-C'hozhvarc'had |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Vieux de St-Gilles.png |
| Coordinates: | 48.2439°N -2.9731°W |
| Insee: | 22295 |
| Postal Code: | 22530 |
| Arrondissement: | Saint-Brieuc |
| Canton: | Guerlédan |
| Mayor: | Laurent Bertho[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 110 |
| Elevation Max M: | 311 |
| Area Km2: | 21.95 |
Saint-Gilles-Vieux-Marché (in French pronounced as /sɛ̃ ʒil vjø maʁʃe/;) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
People from Saint-Gilles-Vieux-Marché are called saint-gillois in French.