| Daillancourt | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Daillancourt.svg |
| Arrondissement: | Chaumont |
| Canton: | Bologne |
| Insee: | 52160 |
| Postal Code: | 52110 |
| Mayor: | Michel Paulin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Chaumont |
| Coordinates: | 48.3031°N 4.9539°W |
| Elevation M: | 233 |
| Area Km2: | 7.91 |
| Demonym: | Daillancourtois, Daillancourtoises |
Daillancourt (pronounced as /fr/) is a commune in the Haute-Marne department in north-eastern France.
The river Blaise flows through the commune.