| Hachan | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Hachan (65).svg |
| Arrondissement: | Tarbes |
| Canton: | Les Coteaux |
| Insee: | 65214 |
| Postal Code: | 65230 |
| Mayor: | Christian Ducaud[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Trie et du Magnoac |
| Coordinates: | 43.2869°N 0.4564°W |
| Elevation M: | 267 |
| Elevation Min M: | 274 |
| Elevation Max M: | 350 |
| Area Km2: | 1.86 |
Hachan (pronounced as /fr/; oc|Haishan) is a commune in the Hautes-Pyrénées department in south-western France.
The Petite Baïse forms part of the commune's eastern border.