The 2nd constituency of Charente-Maritime (French: Deuxième circonscription de la Charente-Maritime) is one of five electoral districts in the department of Charente-Maritime, each of which returns one deputy to the French National Assembly in elections using the two-round system, with a run-off if no candidate receives more than 50% of the vote in the first round.

The constituency is made up of nine cantons: those of Aigrefeuille-d'Aunis, Aytré, Courçon, La Jarrie, Marans, Rochefort-Centre, Rochefort-Nord, Rochefort-Sud, and Surgères.

At the time of the 1999 census (which was the basis for the most recent redrawing of constituency boundaries, carried out in 2010) the 2nd constituency had a total population of 112,535.

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