| Riaucourt | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Riaucourt (Haute-Marne).svg |
| Arrondissement: | Chaumont |
| Canton: | Chaumont-1 |
| Insee: | 52421 |
| Postal Code: | 52000 |
| Mayor: | Christophe Guyot[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Chaumont |
| Coordinates: | 48.1772°N 5.1525°W |
| Elevation M: | 250 |
| Area Km2: | 10.71 |
| Demonym: | Riaucourtois, Riaucourtoises |
Riaucourt (pronounced as /fr/) is a commune in the Haute-Marne department in north-eastern France. It is most notable for a castle that dates back to 1294.[2]