| Carlow | |
| Native Name: | Ceatharlach (Irish) |
| Settlement Type: | Barony |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Leinster |
| Subdivision Type2: | County |
| Subdivision Name2: | Carlow |
| Area Land Km2: | 126.9 |
Carlow is a barony in County Carlow, Ireland.
Carlow barony takes its name from the town of Carlow (of disputed meaning).
Carlow barony is bordered to the east by Rathvilly; to the southeast by Forth; to the south by Idrone East; to the southeast by Idrone West (all the preceding baronies are also in County Carlow); to the north by Kilkea and Moone, County Kildare; and to the northwest by Slievemargy, County Laois.
The Uí Bairrche are noted early in this barony. The O'Dolans were hereditary brehons of Leinster and sited here.[1]
Below is a list of settlements in Carlow barony: