| Ladignac-le-Long | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Ladignac-le-Long (Haute-Vienne).svg |
| Coordinates: | 45.5833°N 1.1144°W |
| Insee: | 87082 |
| Postal Code: | 87500 |
| Arrondissement: | Limoges |
| Canton: | Saint-Yrieix-la-Perche |
| Intercommunality: | Pays de Saint-Yrieix |
| Mayor: | Pierre Millet-Lacombe[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 240 |
| Elevation Max M: | 430 |
| Area Km2: | 47.21 |
Ladignac-le-Long (in French pronounced as /ladiɲak lə lɔ̃/; Occitan (post 1500);: Ladinhac) is a commune in the Haute-Vienne department in the Nouvelle-Aquitaine region in west-central France.
Inhabitants are known as Ladignacois in French.