| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Caher | city | Ireland | 52.38 | -7.92 | 196 | 4574 | |
| Cahernahallia | city | Ireland | 52.59 | -8.22 | 311 | 2044 | |
| Cahir | city | Ireland | 52.38 | -7.92 | 196 | 4574 | |
| Caiseal | city | Ireland | 52.52 | -7.89 | 830 | 4498 | |
| Camus Bridge | city | Ireland | 52.54 | -7.93 | 229 | 4425 | |
| Cappagh | city | Ireland | 52.59 | -7.47 | 321 | 1293 | |
| Cappagh White | city | Ireland | 52.58 | -8.16 | 830 | 1781 | |
| Cappaghmore | city | Ireland | 52.48 | -7.57 | 216 | 1204 | |
| Cappanarragh | city | Ireland | 52.57 | -8.00 | 288 | 1743 | |
| Cappawhite | city | Ireland | 52.58 | -8.16 | 830 | 1781 | |
| Carraig na Siuire | city | Ireland | 52.35 | -7.41 | 49 | 7184 | |
| Carrick-on-Suir | city | Ireland | 52.35 | -7.41 | 49 | 7184 | |
| Carrickbeg | city | Ireland | 52.34 | -7.42 | 190 | 7184 | |
| Carriganagh | city | Ireland | 52.44 | -8.02 | 226 | 1368 | |
| Carriganroe | city | Ireland | 52.29 | -8.08 | 291 | 1068 | |
| Carrigmore Cross Roads | city | Ireland | 52.28 | -8.05 | 242 | 1086 | |
| Carrow | city | Ireland | 52.59 | -8.05 | 830 | 1702 | |
| Carrow | city | Ireland | 52.55 | -7.81 | 830 | 1269 | |
| Cashel | city | Ireland | 52.52 | -7.89 | 830 | 4498 | |
| Castle Mary | city | Ireland | 52.42 | -8.09 | 262 | 1441 | |
| Castlegrace | city | Ireland | 52.29 | -7.95 | 177 | 1209 | |
| Castlelake | city | Ireland | 52.51 | -7.96 | 252 | 2118 | |
| Cathaganstown | city | Ireland | 52.55 | -7.71 | 830 | 1753 | |
| Cauteen Bridge | city | Ireland | 52.54 | -8.18 | 282 | 2082 | |
| Cill Bhearcháin | city | Ireland | 52.59 | -7.48 | 383 | 1296 | |
| Cill Náile | city | Ireland | 52.57 | -7.67 | 830 | 2234 | |
| Clashaniska Mile Tree | city | Ireland | 52.38 | -7.72 | 200 | 17191 | |
| Clashbeg | city | Ireland | 52.54 | -7.51 | 341 | 1910 | |
| Clashdrumsmith | city | Ireland | 52.47 | -8.32 | 370 | 1844 | |
| Clashganny | city | Ireland | 52.26 | -7.81 | 830 | 1376 | |
| Clocully | city | Ireland | 52.29 | -7.85 | 160 | 1997 | |
| Cloghanacody | city | Ireland | 52.33 | -7.85 | 259 | 2559 | |
| Cloghapistole | city | Ireland | 52.39 | -7.44 | 157 | 4951 | |
| Clogheen | city | Ireland | 52.28 | -7.99 | 272 | 1006 | |
| Clohernagh | city | Ireland | 52.41 | -8.06 | 830 | 1355 | |
| Clone Bridge | city | Ireland | 52.60 | -8.00 | 334 | 1564 | |
| Cloneen | city | Ireland | 52.48 | -7.60 | 213 | 1202 | |
| Clonoulty | city | Ireland | 52.60 | -7.96 | 269 | 1554 | |
| Clonoura | city | Ireland | 52.64 | -7.66 | 830 | 1897 | |
| Clonpet | city | Ireland | 52.46 | -8.19 | 830 | 6751 | |
| Cloonyross Cross Roads | city | Ireland | 52.64 | -7.97 | 344 | 1365 | |
| Cloran New | city | Ireland | 52.45 | -7.60 | 830 | 1110 | |
| Coalbrook | city | Ireland | 52.61 | -7.58 | 830 | 1622 | |
| Colman | city | Ireland | 52.45 | -7.75 | 269 | 2458 | |
| Commons | city | Ireland | 52.63 | -7.54 | 830 | 1479 | |
| Coolacussane | city | Ireland | 52.54 | -8.09 | 380 | 1757 | |
| Cooladerry | city | Ireland | 52.28 | -8.16 | 830 | 2462 | |
| Coolagarranoe Bridge | city | Ireland | 52.31 | -8.10 | 351 | 1112 | |
| Coolbaun Cross Roads | city | Ireland | 52.53 | -7.68 | 830 | 1917 | |
| Cooltogoughagn | city | Ireland | 52.55 | -7.48 | 282 | 1681 | |
| Copper | city | Ireland | 52.59 | -7.57 | 830 | 1670 | |
| Crab | city | Ireland | 52.66 | -7.61 | 830 | 1516 | |
| Cregg | city | Ireland | 52.37 | -7.40 | 68 | 7310 | |
| Crehanagh | city | Ireland | 52.33 | -7.40 | 285 | 7251 | |
| Croan | city | Ireland | 52.45 | -7.43 | 830 | 1200 | |
| Crohane Lower | city | Ireland | 52.56 | -7.61 | 830 | 1666 | |
| Crohane Upper | city | Ireland | 52.55 | -7.60 | 830 | 1574 | |
| Crossoges | city | Ireland | 52.66 | -7.59 | 830 | 1537 | |
| Cullen | city | Ireland | 52.51 | -8.27 | 830 | 2110 | |
| Cummer | city | Ireland | 52.67 | -8.14 | 1115 | 860 | |
| Cunningham's Cross Roads | city | Ireland | 52.51 | -8.15 | 396 | 6850 | |
| Cunningham’s Cross Roads | city | Ireland | 52.51 | -8.15 | 396 | 6850 | |
| Curragheloney | city | Ireland | 52.25 | -7.78 | 403 | 1201 | |
| Curraghmore Bridge | city | Ireland | 52.33 | -8.01 | 249 | 1113 | |
| Curraglanarley | city | Ireland | 52.63 | -8.21 | 997 | 1555 | |
| Curraheen | city | Ireland | 52.63 | -8.14 | 928 | 1193 | |
| Curraheen | city | Ireland | 52.42 | -7.43 | 830 | 1344 | |
| Curraleigh | city | Ireland | 52.26 | -8.15 | 830 | 2385 |