| Nieulle-sur-Seudre | |
| Commune Status: | Commune |
| Arrondissement: | Rochefort |
| Canton: | Marennes |
| Insee: | 17265 |
| Postal Code: | 17600 |
| Mayor: | François Servent[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 45.7506°N -0.9986°W |
| Elevation Min M: | 0 |
| Elevation Max M: | 9 |
| Area Km2: | 20.75 |
Nieulle-sur-Seudre (pronounced as /fr/, literally Nieulle on Seudre, before 1962: Nieulle)[2] is a commune in the Charente-Maritime department in southwestern France.