- Saint-Léolin
- Saint-Pons
- Saint-Sauveur
- Saint-Simon
- Sainte-Cécile
- Sainte-Louise
- Sainte-Marie-Saint-Raphaël
- Sainte Rose
- Sainte Rosette
- Salmon Beach
- Savoy Landing
- Shippagan
- Six Roads
- Sormany
- South Tetagouche
- Stonehaven
- Saint-Louis de Kent
- Sussex Corner
- Saint-Amand
- Saint-Basile
- Saint-François-de-Madawaska
- Saint-Jacques
- Saint-Joseph-de-Madawaska
- Saint-Léonard
- Saint-Léonard-Parent
- Sainte-Anne-de-Madawaska
- Siegas
- Siegas Lake Settlement
- Sirois
- Soucy