S
- (Clare) Sheshia
- (Kerry) Sherky Island
- (County Cork) Sherkin Island
- (County Cork) Shanlaragh
- (County Cork) Shanagh
- (Kerry) Scrahan
- (County Cork) Scilly
- (Clare) Scattery Island
- (Kerry) Scartaglin
- (Kerry) Scariff Island
- (County Cork) Sandy Cove
- (Kerry) Samphire Island
- (County Cork) Sallybrook
- (Clare) Saint Thomas Island
- (Clare) Saint Catherines
- (County Cork) Saint Anns Hill
- (Kerry) Skellig Michael
- (Kerry) Sheen Bridge
- (Kerry) Slaheny
- (Kerry) Slaheny Bridge
- (Kerry) Sillahertane
- (Kerry) Shronedarragh
- (Kerry) Shannera Lower
- (Kerry) Sheans
- (Kerry) Scrahanaveal
- (Kerry) Scrahanfadda
- (Kerry) Scrahan
- (Kerry) Scart
- (Kerry) Scalp Bridge
- (County Cork) Shanvallyshane