| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Raheen | city | Ireland | 53.58 | -8.60 | 249 | 1352 | |
| Raheens | city | Ireland | 53.85 | -9.35 | 203 | 9220 | |
| Rampart | city | Ireland | 54.02 | -6.14 | 3 | 2483 | |
| Rapemills | city | Ireland | 52.13 | -7.92 | 226 | 2131 | |
| Rathcolman | city | Ireland | 53.52 | -7.38 | 367 | 14188 | |
| Rathconrath | city | Ireland | 53.52 | -7.52 | 505 | 1034 | |
| Rathcool | city | Ireland | 52.08 | -8.97 | 501 | 1667 | |
| Rathcoole | city | Ireland | 52.08 | -8.97 | 501 | 1667 | |
| Rathgranagher | city | Ireland | 53.60 | -9.07 | 255 | 1522 | |
| Rawros | city | Ireland | 55.18 | -7.77 | 3 | 1607 | |
| Reananerree | city | Ireland | 51.90 | -9.17 | 498 | 927 | |
| Red Castle | city | Ireland | 55.15 | -7.12 | 0 | 716 | |
| Redhill | city | Ireland | 53.98 | -8.47 | 249 | 1061 | |
| Richmount Hill | city | Ireland | 53.63 | -7.70 | 341 | 1261 | |
| Rineanna | city | Ireland | 52.68 | -8.95 | 0 | 6159 | |
| Rinn a Rodain | city | Ireland | 53.92 | -8.37 | 236 | 908 | |
| Rivers Town | city | Ireland | 53.92 | -7.82 | 236 | 1839 | |
| Rockchapel | city | Ireland | 52.28 | -9.15 | 935 | 754 | |
| Rockfield | city | Ireland | 53.65 | -8.28 | 249 | 1438 | |
| Rockhill | city | Ireland | 54.07 | -8.15 | 505 | 1107 | |
| Rockland | city | Ireland | 53.72 | -7.33 | 288 | 958 | |
| Rookwood | city | Ireland | 53.57 | -8.28 | 226 | 1409 | |
| Roonkeel | city | Ireland | 53.68 | -9.90 | 219 | 353 | |
| Ros Ó gCairbre | city | Ireland | 51.57 | -9.03 | 0 | 1870 | |
| Rosborough | city | Ireland | 54.63 | -8.63 | 0 | 1094 | |
| Rosdaul | city | Ireland | 53.62 | -8.47 | 249 | 1260 | |
| Rose Mount | city | Ireland | 53.43 | -7.65 | 374 | 1636 | |
| Roshin | city | Ireland | 54.53 | -8.12 | 1594 | 1436 | |
| Ross | city | Ireland | 53.57 | -6.58 | 354 | 3243 | |
| Ross Carbery | city | Ireland | 51.57 | -9.03 | 0 | 1870 | |
| Ross West | city | Ireland | 53.92 | -9.25 | 206 | 1561 | |
| Rossmore | city | Ireland | 52.15 | -9.58 | 252 | 1978 | |
| Roundfort | city | Ireland | 53.63 | -9.10 | 206 | 1419 | |
| Roundtown | city | Ireland | 53.31 | -6.29 | 180 | 320273 | |
| Roxborough | city | Ireland | 54.63 | -8.63 | 0 | 1094 |