| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Re na nDoiri | city | Cork | Ireland | 51.90 | -9.17 | 830 | 927 |
| Rea | city | Kerry | Ireland | 52.42 | -9.35 | 249 | 1996 |
| Reacaslagh | city | Kerry | Ireland | 52.28 | -9.28 | 849 | 1004 |
| Reacaslagh | city | Kerry | Ireland | 52.01 | -10.10 | 393 | 347 |
| Readstown | city | Meath | Ireland | 53.52 | -6.76 | 255 | 7047 |
| Reaghstown | city | Lu | Ireland | 53.91 | -6.62 | 223 | 2032 |
| Reagrellagh | city | Cork | Ireland | 51.96 | -8.73 | 830 | 2654 |
| Reagrove | city | Cork | Ireland | 51.73 | -8.36 | 173 | 2139 |
| Reanaboola | city | Ireland | 52.04 | -7.79 | 830 | 1117 | |
| Reanaclogheen | city | Ireland | 52.00 | -7.67 | 403 | 721 | |
| Reanadampaun Commons | city | Ireland | 52.23 | -7.69 | 830 | 1181 | |
| Reanadogheen | city | Ireland | 52.00 | -7.67 | 403 | 721 | |
| Reanagishagh | city | Clare | Ireland | 52.82 | -9.20 | 400 | 840 |
| Reanagowan Cross Roads | city | Kerry | Ireland | 52.31 | -9.51 | 830 | 718 |
| Reananerree | city | Cork | Ireland | 51.90 | -9.17 | 830 | 927 |
| Reanasallagh | city | Cork | Ireland | 51.95 | -8.32 | 410 | 5945 |
| Reanascreena | city | Cork | Ireland | 51.63 | -9.06 | 830 | 1647 |
| Reanduff | city | Cork | Ireland | 52.01 | -8.04 | 830 | 1066 |
| Rear Cross | city | Ireland | 52.69 | -8.24 | 830 | 948 | |
| Rearahinagh | city | Cork | Ireland | 51.62 | -9.22 | 232 | 1750 |
| Rearyvalley | city | Laois | Ireland | 53.17 | -7.47 | 406 | 1429 |
| Reask | city | Offaly | Ireland | 53.23 | -7.98 | 180 | 2357 |
| Reavouler Bridge | city | Cork | Ireland | 51.65 | -9.16 | 830 | 1477 |
| Red Bridges | city | Donegal | Ireland | 54.66 | -8.13 | 154 | 4463 |
| Red Burn Bridge | city | Donegal | Ireland | 54.75 | -7.91 | 830 | 823 |
| Red Castle | city | Donegal | Ireland | 55.15 | -7.12 | 0 | 716 |
| Red Cross Roads | city | Cork | Ireland | 51.61 | -9.33 | 206 | 1239 |
| Red Gate | city | Offaly | Ireland | 53.26 | -7.51 | 242 | 12828 |
| Red Hills | city | Kildare | Ireland | 53.18 | -6.96 | 830 | 4793 |
| Red Island | city | Meath | Ireland | 53.74 | -6.78 | 209 | 2102 |
| Redbog | city | Kilkenny | Ireland | 52.64 | -7.05 | 134 | 2385 |
| Redbog | city | Wicklow | Ireland | 52.83 | -6.53 | 830 | 1918 |
| Redbrae | city | Leitrim | Ireland | 54.47 | -8.37 | 3 | 773 |
| Redchair Cross Roads | city | Ireland | 52.29 | -8.45 | 830 | 1461 | |
| Redcross | city | Wicklow | Ireland | 52.89 | -6.15 | 249 | 1745 |
| Reddy's Cross Roads | city | Carlow | Ireland | 52.71 | -7.02 | 255 | 3221 |
| Reddy’s Cross Roads | city | Carlow | Ireland | 52.71 | -7.02 | 255 | 3221 |
| Redford | city | Wicklow | Ireland | 53.15 | -6.08 | 65 | 30844 |
| Redforge | city | Cork | Ireland | 51.99 | -7.93 | 314 | 1261 |
| Redforge Cross Roads | city | Cork | Ireland | 51.99 | -7.93 | 314 | 1261 |
| Redgap | city | South Dublin | Ireland | 53.27 | -6.48 | 882 | 11154 |
| Redgate | city | Wexford | Ireland | 52.42 | -6.50 | 39 | 2661 |
| Redgate | city | Cork | Ireland | 52.10 | -8.91 | 830 | 1608 |
| Redgate Cross Roads | city | Ireland | 52.16 | -7.78 | 351 | 1257 | |
| Redgate Cross Roads | city | Laois | Ireland | 53.08 | -7.44 | 830 | 1165 |
| Redhill | city | Sligo | Ireland | 53.98 | -8.47 | 249 | 1061 |
| Redhills | city | Cavan | Ireland | 54.10 | -7.32 | 249 | 1788 |
| Redington | city | Cork | Ireland | 51.86 | -8.23 | 3 | 7079 |
| Redmondstown | city | Wexford | Ireland | 52.30 | -6.53 | 249 | 10203 |
| Redwood | city | Ireland | 53.12 | -8.11 | 236 | 741 | |
| Reen | city | Kerry | Ireland | 51.88 | -9.64 | 141 | 1235 |
| Reen | city | Kerry | Ireland | 52.12 | -9.80 | 3 | 4706 |
| Reen | city | Cork | Ireland | 51.81 | -8.89 | 830 | 1682 |
| Reen | city | Cork | Ireland | 51.53 | -9.16 | 0 | 1298 |
| Reenard | city | Kerry | Ireland | 51.93 | -10.26 | 29 | 1416 |
| Reenard Cross | city | Kerry | Ireland | 51.93 | -10.24 | 239 | 1804 |
| Reenavanna | city | Ireland | 52.64 | -8.24 | 905 | 1538 | |
| Reenconnell | city | Kerry | Ireland | 52.18 | -10.32 | 328 | 1740 |
| Reenroe | city | Kerry | Ireland | 51.85 | -10.24 | 6 | 860 |
| Reenrone | city | Kerry | Ireland | 51.80 | -9.98 | 16 | 214 |
| Reens | city | Ireland | 52.51 | -9.00 | 131 | 2490 | |
| Reens Bridge | city | Ireland | 52.49 | -9.00 | 131 | 3098 | |
| Reeragullee | city | Ireland | 52.02 | -7.68 | 830 | 1367 | |
| Reevanagh | city | Kilkenny | Ireland | 52.73 | -7.13 | 830 | 860 |
| Reeves | city | Kildare | Ireland | 53.31 | -6.56 | 190 | 18541 |
| Regalnka Bridge | city | Clare | Ireland | 52.89 | -9.20 | 206 | 1052 |
| Reily's Cross | city | Meath | Ireland | 53.68 | -6.99 | 337 | 1619 |
| Reily’s Cross | city | Meath | Ireland | 53.68 | -6.99 | 337 | 1619 |
| Relagh | city | Cavan | Ireland | 53.87 | -6.96 | 830 | 2506 |
| Relaghbeg | city | Cavan | Ireland | 53.87 | -6.96 | 830 | 2506 |
| Releagh | city | Cork | Ireland | 51.78 | -9.57 | 830 | 670 |
| Releagh Bridge | city | Kerry | Ireland | 51.82 | -9.56 | 830 | 722 |
| Renaghmore | city | Ireland | 52.65 | -7.54 | 830 | 1372 | |
| Rerrin | city | Cork | Ireland | 51.64 | -9.82 | 3 | 357 |
| Reynabrone | city | Galway | Ireland | 53.10 | -8.55 | 830 | 579 |
| Reyndrumadda | city | Galway | Ireland | 53.06 | -8.43 | 318 | 959 |
| Reynold's Town | city | Lu | Ireland | 53.81 | -6.27 | 3 | 2403 |
| Reynold’s Town | city | Lu | Ireland | 53.81 | -6.27 | 3 | 2403 |
| Reyrawer | city | Galway | Ireland | 53.07 | -8.68 | 830 | 507 |