S
- (Wicklow) Sandy Ford
- (Wexford) Saltmills
- (Louth) Salterstown
- (Wexford) Saltee Islands
- (County Carlow) Saint Mullins
- (Fingal County) Saint Doolaghs
- (South Dublin) Saint Anns Wells
- (Kilkenny) Sandpits Cross Roads
- (Kilkenny) Smartscastle
- (Wexford) Stoneenrath Cross Roads
- (Wexford) Sheastown Cross Roads
- (Wexford) Scurloge Cross Roads
- (Wexford) Shanowle
- (Wexford) Star Bridge
- (Wexford) Sigginstown Islands
- (Wexford) Saint Helens
- (Wexford) Shelmaliere Common
- (Kilkenny) Smithstown
- (Kilkenny) Shunbagh
- (Kilkenny) Slievecarragh
- (Kilkenny) Stonecarthy
- (Kilkenny) Stakally
- (Kilkenny) Skeaghvasteen
- (Kilkenny) Scart
- (Kilkenny) Stoneen
- (Kilkenny) Sandfordscourt
- (Kilkenny) Sheafield
- (Kilkenny) Shankill
- (Kilkenny) Smithstown
- (Kilkenny) Skehana