| Fort Lupin | |
|---|---|
| Saint-Nazaire-sur-Charente, Charente-Maritime, France | |
 Embrasures of Fort Lupin | |
| Coordinates | 45°57′26.9″N 1°1′57.9″W / 45.957472°N 1.032750°W |
| Type | Artillery battery |
| Site information | |
| Owner | Private |
| Open to the public | No |
| Condition | Intact |
| Site history | |
| Built | 1683–1686 |
| Built by | Kingdom of France |
| In use | 1686–19th century |
Fort Lupin, also known as Fort de la Charente, is an artillery battery in Saint-Nazaire-sur-Charente, in the department of Charente-Maritime, France. It was built in the 1680s to a design by Sébastien Le Prestre de Vauban, and it is now in good condition.