| Monlong | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Monlong (65).svg |
| Arrondissement: | Tarbes |
| Canton: | Les Coteaux |
| Insee: | 65316 |
| Postal Code: | 65670 |
| Mayor: | Michel Fis[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Trie et du Magnoac |
| Coordinates: | 43.2072°N 0.465°W |
| Elevation M: | 625 |
| Elevation Min M: | 372 |
| Elevation Max M: | 529 |
| Area Km2: | 7.21 |
Monlong (in French pronounced as /mɔ̃lɔ̃/; Occitan (post 1500);: Montlong) is a commune in the Hautes-Pyrénées department in south-western France.
Monlong is a small village in the Hautes-Pyrénées area of the Occitanie. The mayor, Michelle Castes, has been very active in building the profile of the village in the region as it sits on the main D929 that runs from Lannemezan up to Auch. The village has a post office and a chambres d'hote, La Cassoulere.