| Forest-Saint-Julien | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Forest Saint Julien.svg |
| Arrondissement: | Gap |
| Canton: | Saint-Bonnet-en-Champsaur |
| Insee: | 05056 |
| Postal Code: | 05260 |
| Mayor: | Fabrice Borel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Champsaur-Valgaudemar |
| Coordinates: | 44.6347°N 6.1364°W |
| Elevation M: | 1200 |
| Elevation Min M: | 1015 |
| Elevation Max M: | 1631 |
| Area Km2: | 6.95 |
Forest-Saint-Julien (pronounced as /fr/; Vivaro-Alpine: Forest Sant Julian) is a commune of the Hautes-Alpes department in Southeastern France.