| Ollainville | |
| Commune Status: | Commune |
| Arrondissement: | Neufchâteau |
| Canton: | Mirecourt |
| Insee: | 88336 |
| Postal Code: | 88170 |
| Mayor: | Pauline Mire[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Ouest Vosgien |
| Coordinates: | 48.2681°N 5.8064°W |
| Elevation M: | 340 |
| Elevation Min M: | 323 |
| Elevation Max M: | 438 |
| Area Km2: | 6.31 |
Ollainville (in French pronounced as /ɔlɛ̃vil/) is a commune in the Vosges department in Grand Est in northeastern France.
Between 1962 and 1999, the registered population declined progressively by nearly 40%.