| Marignac-en-Diois | |
| Commune Status: | Commune |
| Arrondissement: | Die |
| Canton: | Le Diois |
| Insee: | 26175 |
| Postal Code: | 26150 |
| Mayor: | Bernard Sellier[1] |
| Term: | 2022 - 2026 |
| Intercommunality: | Diois |
| Coordinates: | 44.8031°N 5.3342°W |
| Elevation M: | 623 |
| Elevation Min M: | 531 |
| Elevation Max M: | 1641 |
| Area Km2: | 18.26 |
Marignac-en-Diois (in French pronounced as /maʁiɲak ɑ̃ diwa/; Occitan (post 1500);: Marinhac de Diés) is a commune in the Drôme department in southeastern France.