| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cameron | city | Ireland | 52.96 | -8.27 | 383 | 851 | |
| Camira | city | Ireland | 52.88 | -8.07 | 367 | 982 | |
| Capparoe | city | Ireland | 52.82 | -8.26 | 239 | 2990 | |
| Caraghmore | city | Ireland | 52.81 | -8.37 | 347 | 1610 | |
| Carney | city | Ireland | 52.98 | -8.18 | 239 | 1672 | |
| Carrickloughmore Cross Roads | city | Ireland | 52.76 | -7.84 | 337 | 3708 | |
| Carrig | city | Ireland | 53.06 | -7.97 | 219 | 1409 | |
| Carrigagown | city | Ireland | 52.97 | -8.22 | 285 | 1105 | |
| Carrigahorig | city | Ireland | 53.06 | -8.14 | 190 | 1160 | |
| Carrigatogher | city | Ireland | 52.84 | -8.28 | 226 | 1960 | |
| Carrow | city | Ireland | 52.90 | -8.28 | 177 | 1928 | |
| Carrow Cross | city | Ireland | 52.82 | -8.25 | 249 | 2990 | |
| Cassestown | city | Ireland | 52.70 | -7.77 | 357 | 8359 | |
| Castleleiny | city | Ireland | 52.79 | -7.81 | 403 | 3486 | |
| Castletown | city | Ireland | 52.88 | -8.38 | 830 | 1319 | |
| Castletown | city | Ireland | 52.72 | -7.70 | 416 | 1339 | |
| Cill Mhac Stola | city | Ireland | 52.78 | -8.40 | 269 | 2796 | |
| Clare Bridge | city | Ireland | 52.69 | -8.38 | 830 | 1994 | |
| Clash | city | Ireland | 52.87 | -8.03 | 830 | 1183 | |
| Cloch Shiurdain | city | Ireland | 52.94 | -8.04 | 380 | 1232 | |
| Cloghjordan | city | Ireland | 52.94 | -8.04 | 380 | 1232 | |
| Cloghmartin | city | Ireland | 52.64 | -7.82 | 367 | 9976 | |
| Clon | city | Ireland | 52.70 | -7.93 | 278 | 1916 | |
| Clonakenny | city | Ireland | 52.87 | -7.83 | 830 | 1074 | |
| Clonalea | city | Ireland | 52.85 | -8.07 | 830 | 1237 | |
| Cloncannon | city | Ireland | 52.86 | -7.96 | 830 | 1032 | |
| Clonmore | city | Ireland | 52.83 | -7.76 | 830 | 1390 | |
| Clontaaffe | city | Ireland | 52.84 | -7.84 | 830 | 2479 | |
| Cloughjordan | city | Ireland | 52.94 | -8.04 | 380 | 1232 | |
| Cnocán an Éin Fhinn | city | Ireland | 52.77 | -8.44 | 255 | 3701 | |
| Commaun | city | Ireland | 52.74 | -8.11 | 994 | 823 | |
| Coogulla | city | Ireland | 52.77 | -7.80 | 830 | 3437 | |
| Cool Bridge | city | Ireland | 52.77 | -8.43 | 239 | 3450 | |
| Coolaculla | city | Ireland | 52.73 | -7.76 | 400 | 2096 | |
| Coolbaun | city | Ireland | 52.98 | -8.25 | 278 | 928 | |
| Coolbawn | city | Ireland | 52.98 | -8.25 | 278 | 928 | |
| Cooleen | city | Ireland | 52.76 | -8.04 | 830 | 1284 | |
| Cooleenduff Bridge | city | Ireland | 52.70 | -8.01 | 954 | 1286 | |
| Cooleeny | city | Ireland | 52.73 | -7.69 | 830 | 1152 | |
| Coolkill | city | Ireland | 52.67 | -7.93 | 255 | 1662 | |
| Coologe | city | Ireland | 52.83 | -7.97 | 935 | 1081 | |
| Coolross | city | Ireland | 53.13 | -8.04 | 206 | 1008 | |
| Coonmore | city | Ireland | 52.68 | -8.20 | 830 | 881 | |
| Coumbeg | city | Ireland | 52.85 | -8.36 | 987 | 1718 | |
| Cragg | city | Ireland | 52.74 | -8.44 | 216 | 3474 | |
| Crishangagh | city | Ireland | 52.78 | -8.32 | 830 | 1110 | |
| Crumlin | city | Ireland | 52.87 | -7.92 | 938 | 952 | |
| Cullahill | city | Ireland | 52.87 | -7.73 | 830 | 1200 | |
| Cummer | city | Ireland | 52.72 | -8.10 | 938 | 837 | |
| Currabaha Cross | city | Ireland | 52.77 | -8.02 | 830 | 1454 | |
| Curragh | city | Ireland | 52.86 | -8.36 | 830 | 1723 | |
| Curragunneen | city | Ireland | 52.89 | -7.79 | 830 | 2363 | |
| Curraheen | city | Ireland | 52.80 | -7.98 | 830 | 1438 | |
| Curreeny | city | Ireland | 52.73 | -8.15 | 997 | 775 | |
| Curreeny Commons | city | Ireland | 52.74 | -8.21 | 954 | 813 | |
| Curreeny Cross | city | Ireland | 52.73 | -8.14 | 997 | 781 | |
| Curriggal | city | Ireland | 52.82 | -8.32 | 830 | 1412 | |
| Curryquin | city | Ireland | 52.78 | -8.18 | 830 | 1110 |