The Battle of Les Sables-d'Olonne was a minor naval battle fought on 23 February 1809 off the town of Les Sables-d'Olonne on the Biscay Coast of France between a French Navy squadron of three frigates and a larger British squadron of ships of the line. The French squadron had sailed from the port of Lorient on 23 February in an effort to link up with a fleet from Brest under Jean-Baptiste Willaumez, but missed the rendezvous and was pursued by a British blockade squadron under Rear-Admiral Robert Stopford. The French commander, Commodore Pierre Roch Jurien, anchored his squadron under the batteries which protected the town of Les Sables-d'Olonne in the hope of dissuading an attack.