| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Spa | city | Kerry | Ireland | 52.28 | -9.78 | 127 | 6230 |
| Spa Mount | city | Cork | Ireland | 52.07 | -9.06 | 830 | 1996 |
| Spaddagh | city | Mayo | Ireland | 53.93 | -9.02 | 98 | 1938 |
| Spahill | city | Kilkenny | Ireland | 52.75 | -7.50 | 830 | 1551 |
| Spancelhill | city | Clare | Ireland | 52.87 | -8.90 | 370 | 2308 |
| Spanish Point | city | Clare | Ireland | 52.85 | -9.44 | 0 | 1948 |
| Spaville | city | Ireland | 52.35 | -7.69 | 830 | 16381 | |
| Spear Vale | city | Cavan | Ireland | 53.92 | -7.00 | 882 | 2892 |
| Spectacle Bridge | city | Clare | Ireland | 53.03 | -9.30 | 242 | 1754 |
| Speenoge | city | Donegal | Ireland | 55.04 | -7.43 | 249 | 3851 |
| Spellickanee | city | Lu | Ireland | 54.04 | -6.27 | 830 | 2452 |
| Spencer Bridge | city | Kildare | Ireland | 53.22 | -7.00 | 269 | 2586 |
| Spiddal | city | Galway | Ireland | 53.25 | -9.30 | 3 | 1011 |
| Spiddle | city | Galway | Ireland | 53.25 | -9.30 | 3 | 1011 |
| Spinans Cross Roads | city | Wicklow | Ireland | 52.95 | -6.66 | 830 | 2333 |
| Spink | city | Laois | Ireland | 52.90 | -7.23 | 830 | 1587 |
| Spital | city | Cork | Ireland | 52.25 | -8.65 | 374 | 2481 |
| Spital Bridge | city | Cork | Ireland | 51.63 | -8.78 | 3 | 2224 |
| Spittaltown | city | An Iarmhi | Ireland | 53.40 | -7.57 | 252 | 1826 |
| Spittle | city | Ireland | 52.38 | -8.34 | 830 | 2025 | |
| Spittle | city | Ireland | 52.32 | -8.42 | 830 | 1629 | |
| Splithill Cross Roads | city | Kildare | Ireland | 53.10 | -6.92 | 295 | 3585 |
| Sporthouse Cross Roads | city | Ireland | 52.20 | -7.18 | 252 | 11455 | |
| Sprangmount | city | Ireland | 51.99 | -7.90 | 59 | 6012 | |
| Spread's Cross Roads | city | Cork | Ireland | 51.78 | -8.67 | 252 | 3365 |
| Spread’s Cross Roads | city | Cork | Ireland | 51.78 | -8.67 | 252 | 3365 |
| Spring Bridge | city | Wexford | Ireland | 52.40 | -6.64 | 246 | 2202 |
| Springfield | city | Laois | Ireland | 53.05 | -7.40 | 830 | 1517 |
| Springfield | city | Kildare | Ireland | 53.20 | -7.00 | 305 | 2722 |
| Springhall | city | Meath | Ireland | 53.73 | -7.18 | 830 | 1969 |
| Springhill | city | Cork | Ireland | 52.14 | -8.46 | 269 | 1366 |
| Springhill | city | Laois | Ireland | 52.84 | -7.00 | 830 | 5891 |
| Springmount | city | Ireland | 52.09 | -7.67 | 65 | 7227 | |
| Springvale | city | Galway | Ireland | 53.14 | -8.39 | 232 | 1454 |
| Springville | city | Meath | Ireland | 53.71 | -6.96 | 344 | 1775 |
| Spunkane | city | Kerry | Ireland | 51.85 | -10.19 | 19 | 995 |
| Spurree Cross Roads | city | Cork | Ireland | 52.09 | -8.24 | 219 | 4237 |
| Spíonóg | city | Donegal | Ireland | 55.04 | -7.43 | 249 | 3851 |