S
- (Uíbh Fhailí) Shean
- (Uíbh Fhailí) Shane Valley
- (Kildare) Shanavoola
- (Kildare) Shee Bridge
- (Kildare) Scrawtown
- (Kildare) Sherlockstown
- (Uíbh Fhailí) Stonehouse
- (Kildare) Staplestown
- (Wicklow) Seskin
- (Wicklow) Stranahely
- (Wicklow) Strand Bridge
- (Wicklow) Sraghmore
- (Wicklow) Sleamaine
- (Wicklow) Sroughan
- (Wicklow) Shankill
- (Kildare) Stacumny
- (Fingal County) Summerton
- (Meath) Summerseat
- (Wicklow) Stump of the Castle
- (South Dublin) Slade
- (Fingal County) Saint Marnocks
- (Fingal County) Seafield
- (Fingal County) Saint Margaret’s
- (Fingal County) Skephubble
- (Meath) Smithstown
- (Westmeath) Sarsfieldstown
- (Westmeath) Streamstown
- (Westmeath) Simonstown
- (Westmeath) Screggan
- (Westmeath) Stonestown