Rochefort, unofficially Rochefort-sur-Mer for disambiguation, is a city and commune in Southwestern France, a port on the Charente estuary. It is a subprefecture of the Charente-Maritime department, located in the administrative region of Nouvelle-Aquitaine.

Charente-Maritime is a département in the Nouvelle-Aquitaine region on the southwestern coast of France. Named after the river Charente, its prefecture is La Rochelle. As of 2019, it had a population of 651,358 with an area of 6,864 square kilometres.