| Saint-Julien | |
| Native Name: | Sant-Juluan-Pentevr |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Saint-Julien (Côtes-d'Armor).svg |
| Coordinates: | 48.4533°N -2.8153°W |
| Insee: | 22307 |
| Postal Code: | 22940 |
| Arrondissement: | Saint-Brieuc |
| Canton: | Ploufragan |
| Mayor: | Gaël Le Noane[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Saint-Brieuc Armor |
| Elevation Min M: | 88 |
| Elevation Max M: | 197 |
| Area Km2: | 5.69 |
Saint-Julien (in French pronounced as /sɛ̃ ʒyljɛ̃/;) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
Inhabitants of Saint-Julien are called julianais in French.