| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Kellys Quarter | city | Carlow | Ireland | 52.65 | -6.74 | 830 | 1271 |
| Kibuacart House | city | Carlow | Ireland | 52.87 | -6.56 | 830 | 1924 |
| Kilbride | city | Carlow | Ireland | 52.72 | -6.72 | 370 | 1728 |
| Kilbride Cross Roads | city | Carlow | Ireland | 52.72 | -6.72 | 370 | 1728 |
| Kilcarry | city | Carlow | Ireland | 52.70 | -6.67 | 246 | 2660 |
| Kilcoltrim | city | Carlow | Ireland | 52.59 | -6.90 | 219 | 1927 |
| Kilconner | city | Carlow | Ireland | 52.72 | -6.83 | 341 | 1938 |
| Kilcrrig Cross Roads | city | Carlow | Ireland | 52.84 | -6.79 | 311 | 2065 |
| Kilcurry Bridge | city | Carlow | Ireland | 52.71 | -6.68 | 232 | 2155 |
| Kildavan | city | Carlow | Ireland | 52.68 | -6.69 | 219 | 2734 |
| Kildavin | city | Carlow | Ireland | 52.68 | -6.69 | 219 | 2734 |
| Kildreenagh | city | Carlow | Ireland | 52.71 | -6.90 | 830 | 2605 |
| Killalongford | city | Carlow | Ireland | 52.81 | -6.57 | 882 | 1612 |
| Killan Bridge | city | Carlow | Ireland | 52.73 | -6.81 | 308 | 2009 |
| Killedmond | city | Carlow | Ireland | 52.61 | -6.84 | 377 | 1253 |
| Killoughternane | city | Carlow | Ireland | 52.64 | -6.87 | 377 | 1715 |
| Kineagh | city | Carlow | Ireland | 52.87 | -6.78 | 370 | 1898 |
| Knockballystine Cross Roads | city | Carlow | Ireland | 52.83 | -6.64 | 396 | 1563 |
| Knockclonagad | city | Carlow | Ireland | 52.67 | -6.87 | 295 | 1681 |
| Knockdramagh Bridge | city | Carlow | Ireland | 52.67 | -6.81 | 830 | 1616 |
| Knockduff | city | Carlow | Ireland | 52.53 | -6.90 | 252 | 1814 |
| Knockendrane | city | Carlow | Ireland | 52.65 | -6.83 | 830 | 1393 |
| Knocklishen Beg | city | Carlow | Ireland | 52.89 | -6.65 | 830 | 2299 |
| Knocklishen More | city | Carlow | Ireland | 52.87 | -6.64 | 400 | 2012 |
| Knockmore | city | Carlow | Ireland | 52.59 | -6.85 | 341 | 1158 |
| Knockscur | city | Carlow | Ireland | 52.62 | -6.87 | 390 | 1563 |
| Knocksquire | city | Carlow | Ireland | 52.62 | -6.87 | 390 | 1563 |
| Knockullard | city | Carlow | Ireland | 52.64 | -6.90 | 255 | 1990 |
| Kyle Cross Roads | city | Carlow | Ireland | 52.58 | -6.87 | 239 | 1445 |