Carleton-sur-Mer (French pronunciation: [kaʁlətən syʁ mɛʁ]) is the fifth largest town of the Gaspésie's south shore, in southeastern Quebec, Canada, located on Route 132, along Chaleur Bay.

The current City of Carleton-sur-Mer was created on October 4, 2000, when the town of Carleton and the parish municipality of Saint-Omer were merged.

He conducted the very first census of Tragadigash (recensement Tracadigache 1777) where he listed the following family names: Allard, Allain, Arseneau, Aubertin, Barriot, Bergeron, Berthelot, Boudreau, Bujold, Comeau, Cormier, Dugas, Francis, Landry, Leblanc, Poirier, Richard; totalling 177 persons.

[1][7] After the arrival of the first Acadians in 1756, the territory of Saint-Omer was included in the Parish of Saint Joseph de Tracadièche and had a common history with Carleton.

[1] The small agricultural and forestry village of Saint-Louis de Gonzague, 8 kilometres (5.0 mi) north of Saint-Omer, was established in 1864 by the Government of Quebec to encourage economic development.

Tourism was, from the very beginnings, a significant aspect of the economy due in large part to its beaches and warm water temperature.