| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| St Johnston | city | Donegal | Ireland | 54.93 | -7.45 | 3 | 3624 |
| St. Ann's Well | city | South Dublin | Ireland | 53.23 | -6.35 | 984 | 27935 |
| St. Ann’s Well | city | South Dublin | Ireland | 53.23 | -6.35 | 984 | 27935 |
| Stabannan | city | Lu | Ireland | 53.86 | -6.44 | 16 | 3209 |
| Stackallan | city | Meath | Ireland | 53.70 | -6.61 | 147 | 6464 |
| Stacumny | city | Kildare | Ireland | 53.34 | -6.52 | 213 | 34919 |
| Stagdale Bridge | city | Ireland | 52.41 | -8.23 | 374 | 1201 | |
| Stahannan | city | Lu | Ireland | 53.86 | -6.44 | 16 | 3209 |
| Staigue | city | Kerry | Ireland | 51.81 | -10.04 | 830 | 503 |
| Stakally | city | Kilkenny | Ireland | 52.57 | -6.97 | 367 | 3011 |
| Stakehill | city | Cork | Ireland | 52.14 | -9.07 | 830 | 1671 |
| Stamullin | city | Meath | Ireland | 53.63 | -6.27 | 131 | 3407 |
| Staplestown | city | Kildare | Ireland | 53.33 | -6.77 | 305 | 4187 |
| Star Bridge | city | Wexford | Ireland | 52.25 | -6.60 | 95 | 2412 |
| Statty Bridge | city | Cork | Ireland | 51.90 | -8.28 | 3 | 9727 |
| Steach Cuimne | city | Kildare | Ireland | 53.34 | -6.52 | 213 | 34919 |
| Steach Maoilín | city | Meath | Ireland | 53.63 | -6.27 | 131 | 3407 |
| Steeplestown | city | Meath | Ireland | 53.57 | -6.80 | 249 | 7748 |
| Stepaside | city | Dun Laoghaire-Rathdown | Ireland | 53.25 | -6.21 | 830 | 94838 |
| Stickstown | city | Cork | Ireland | 51.85 | -8.79 | 246 | 2769 |
| Stigh Colláin | city | Meath | Ireland | 53.70 | -6.61 | 147 | 6464 |
| Stigh Lorgan | city | Dun Laoghaire-Rathdown | Ireland | 53.29 | -6.22 | 242 | 166711 |
| Stillorgan | city | Dun Laoghaire-Rathdown | Ireland | 53.29 | -6.22 | 242 | 166711 |
| Stocks | city | Meath | Ireland | 53.61 | -6.92 | 272 | 3292 |
| Stokaun | city | Ireland | 52.51 | -8.13 | 357 | 6120 | |
| Stokestown | city | Meath | Ireland | 53.52 | -6.77 | 259 | 7503 |
| Stone Bridge | city | Monaghan | Ireland | 54.20 | -7.17 | 239 | 2440 |
| Stonebrook | city | Kildare | Ireland | 53.14 | -6.65 | 830 | 2790 |
| Stonecarthy | city | Kilkenny | Ireland | 52.52 | -7.24 | 249 | 2078 |
| Stoneen | city | Kilkenny | Ireland | 52.56 | -7.10 | 285 | 2543 |
| Stoneenrath Cross Roads | city | Wexford | Ireland | 52.31 | -6.73 | 85 | 2106 |
| Stonefield | city | Mayo | Ireland | 54.31 | -9.83 | 209 | 471 |
| Stonehall | city | Ireland | 52.61 | -8.87 | 72 | 2495 | |
| Stonehall | city | Mayo | Ireland | 54.00 | -9.14 | 124 | 2048 |
| Stonehall | city | Meath | Ireland | 53.54 | -6.79 | 200 | 7580 |
| Stonehouse | city | Ireland | 52.25 | -7.25 | 104 | 3474 | |
| Stonehouse | city | Offaly | Ireland | 53.40 | -7.16 | 400 | 1555 |
| Stoneleigh | city | Galway | Ireland | 53.25 | -8.77 | 98 | 3031 |
| Stonepark | city | Mayo | Ireland | 54.01 | -8.94 | 206 | 1227 |
| Stonepark | city | Ireland | 52.58 | -8.54 | 295 | 7276 | |
| Stonepark | city | Ireland | 52.41 | -8.16 | 830 | 1226 | |
| Stonepark | city | Mayo | Ireland | 53.78 | -9.14 | 232 | 1757 |
| Stoneparkbrogan | city | Mayo | Ireland | 54.01 | -9.14 | 167 | 2030 |
| Stonestown | city | An Iarmhi | Ireland | 53.57 | -7.11 | 390 | 1708 |
| Stonestown | city | An Iarmhi | Ireland | 53.64 | -7.11 | 403 | 1578 |
| Stonestown | city | An Iarmhi | Ireland | 53.61 | -7.03 | 331 | 1458 |
| Stonestown | city | Meath | Ireland | 53.60 | -6.80 | 255 | 5287 |
| Stonetown | city | Galway | Ireland | 53.62 | -8.55 | 249 | 1574 |
| Stoneyisland | city | Galway | Ireland | 53.09 | -8.30 | 180 | 1015 |
| Stonybatter | city | Wicklow | Ireland | 52.76 | -6.45 | 830 | 1881 |
| Stonyford | city | Kilkenny | Ireland | 52.54 | -7.22 | 259 | 2493 |
| Straboe | city | Carlow | Ireland | 52.86 | -6.79 | 337 | 1916 |
| Straboy | city | Donegal | Ireland | 54.75 | -8.62 | 830 | 395 |
| Stracashel | city | Donegal | Ireland | 54.82 | -8.19 | 830 | 312 |
| Stradbally | city | Galway | Ireland | 53.22 | -8.89 | 13 | 3817 |
| Stradbally | city | Laois | Ireland | 53.02 | -7.15 | 830 | 2519 |
| Stradbally | city | Kerry | Ireland | 52.25 | -10.07 | 265 | 985 |
| Stradbally | city | Ireland | 52.13 | -7.46 | 9 | 1225 | |
| Stradbally Bridge | city | Ireland | 52.13 | -7.46 | 0 | 1225 | |
| Strade | city | Mayo | Ireland | 53.92 | -9.13 | 147 | 1809 |
| Stradone | city | Cavan | Ireland | 53.98 | -7.23 | 830 | 1873 |
| Straduff | city | Carlow | Ireland | 52.68 | -6.82 | 374 | 1835 |
| Straduff | city | Sligo | Ireland | 54.12 | -8.23 | 925 | 730 |
| Straffan | city | Kildare | Ireland | 53.32 | -6.63 | 236 | 9543 |
| Stragelliff | city | Cavan | Ireland | 54.00 | -7.30 | 830 | 4149 |
| Strahack | city | Donegal | Ireland | 55.08 | -7.49 | 29 | 2039 |
| Strahart | city | Wexford | Ireland | 52.61 | -6.59 | 213 | 1937 |
| Straheglin | city | Cavan | Ireland | 54.09 | -7.43 | 311 | 2492 |
| Straid | city | Donegal | Ireland | 55.27 | -7.43 | 173 | 1795 |
| Straleel | city | Donegal | Ireland | 54.68 | -8.63 | 328 | 1269 |
| Straleel North | city | Donegal | Ireland | 54.69 | -8.64 | 839 | 1141 |
| Stralongford | city | Donegal | Ireland | 54.89 | -7.75 | 830 | 2456 |
| Stramillian | city | Kildare | Ireland | 53.12 | -7.04 | 255 | 4069 |
| Stranaboll | city | Meath | Ireland | 53.65 | -7.07 | 360 | 1406 |
| Stranabrooey | city | Donegal | Ireland | 55.09 | -8.27 | 249 | 1956 |
| Stranagalloon | city | Clare | Ireland | 52.96 | -8.91 | 157 | 957 |
| Stranagappoge | city | Donegal | Ireland | 55.17 | -7.24 | 830 | 1363 |
| Stranagartan | city | Donegal | Ireland | 54.73 | -8.61 | 830 | 417 |
| Stranagoppoge | city | Donegal | Ireland | 55.17 | -7.24 | 830 | 1363 |
| Stranahely | city | Wicklow | Ireland | 53.00 | -6.55 | 987 | 597 |
| Stranarva | city | Donegal | Ireland | 54.99 | -8.26 | 830 | 1690 |
| Strand | city | Ireland | 52.40 | -9.11 | 830 | 2022 | |
| Strand Bridge | city | Wicklow | Ireland | 52.94 | -6.32 | 830 | 576 |
| Strandhill | city | Sligo | Ireland | 54.27 | -8.59 | 203 | 2105 |
| Stranorlar | city | Donegal | Ireland | 54.80 | -7.77 | 193 | 4182 |
| Straruddan | city | Donegal | Ireland | 55.25 | -7.15 | 82 | 1381 |
| Strasburgh | city | Clare | Ireland | 52.82 | -9.05 | 196 | 6863 |
| Stratford | city | Wicklow | Ireland | 52.99 | -6.68 | 830 | 2347 |
| Stratford-on-Slanney | city | Wicklow | Ireland | 52.99 | -6.68 | 830 | 2347 |
| Straths Bridge | city | Donegal | Ireland | 55.27 | -7.32 | 131 | 2217 |
| Stravally | city | Donegal | Ireland | 54.73 | -8.55 | 830 | 290 |
| Strawhall Cross Roads | city | Cork | Ireland | 51.82 | -8.81 | 830 | 2181 |
| Stream | city | Offaly | Ireland | 53.15 | -8.00 | 190 | 2124 |
| Stream's Town | city | Donegal | Ireland | 55.13 | -7.72 | 32 | 1879 |
| Streamstown | city | Galway | Ireland | 53.52 | -10.05 | 249 | 2251 |
| Streamstown | city | An Iarmhi | Ireland | 53.43 | -7.58 | 334 | 1346 |
| Streamstown | city | Sligo | Ireland | 54.21 | -8.56 | 114 | 2399 |
| Streamstown | city | Mayo | Ireland | 54.09 | -9.36 | 147 | 1637 |
| Streamstown | city | Mayo | Ireland | 53.78 | -9.56 | 131 | 6206 |
| Streamstown | city | An Iarmhi | Ireland | 53.54 | -7.20 | 830 | 1371 |
| Stream’s Town | city | Donegal | Ireland | 55.13 | -7.72 | 32 | 1879 |
| Street | city | An Iarmhi | Ireland | 53.67 | -7.48 | 232 | 980 |
| Strogue | city | Ireland | 52.80 | -7.77 | 830 | 2106 | |
| Strogue Cross | city | Ireland | 52.80 | -7.77 | 830 | 2266 | |
| Strokestown | city | Roscommon | Ireland | 53.78 | -8.10 | 236 | 1692 |
| Stronghow's Bridge | city | Ireland | 52.24 | -7.02 | 52 | 8087 | |
| Stronghow’s Bridge | city | Ireland | 52.24 | -7.02 | 52 | 8087 | |
| Stroove | city | Donegal | Ireland | 55.22 | -6.93 | 0 | 132 |
| Struaun | city | Mayo | Ireland | 53.85 | -9.34 | 196 | 10581 |
| Stuake | city | Cork | Ireland | 51.98 | -8.77 | 830 | 2033 |
| Stuck Cross Roads | city | Leitrim | Ireland | 53.95 | -7.92 | 393 | 1490 |
| Stud Farm | city | Cork | Ireland | 51.94 | -8.24 | 272 | 4565 |
| Stump of the Castle | city | Wicklow | Ireland | 52.95 | -6.23 | 830 | 2841 |