| Le Margnès | |
| Arrondissement: | Castres |
| Canton: | Les Hautes Terres d'Oc |
| Insee: | 81153 |
| Postal Code: | 81260 |
| Commune: | Fontrieu |
| Coordinates: | 43.6419°N 2.6019°W |
| Elevation M: | 900 |
| Elevation Min M: | 736 |
| Elevation Max M: | 1070 |
| Area Km2: | 17.89 |
| Population: | 50 |
| Population Date: | 2018 |
| Population Footnotes: | [1] |
Le Margnès (pronounced as /fr/; Languedocien: Lo Marnhès) is a former commune in the Tarn department in southern France. On 1 January 2016, it was merged into the new commune of Fontrieu.[2]