S
- (Meath) Stackallan
- (Meath) Swainstown
- (Meath) Scurlockstown
- (Uíbh Fhailí) Shannonbridge
- (Wicklow) Stratford
- (Wicklow) Stratford on Slaney
- (Wicklow) Shillelagh
- (Kildare) Straffan
- (Uíbh Fhailí) Shinrone
- (Kildare) Suncroft
- (Meath) Summerhill
- (Laois) Stradbally
- (Meath) Slane
- (South Dublin) Saggart
- (Meath) Stamullin
- (Kildare) Sallins
- (Fingal County) Sutton
- (Dún Laoghaire-Rathdown) Sallynoggin
- (Dublin City) Sandymount
- (Fingal County) Skerries
- (Dún Laoghaire-Rathdown) Shankill
- (Dún Laoghaire-Rathdown) Sandyford