| Kilcullen | |
| Native Name: | Cill Chuillinn (Irish) |
| Settlement Type: | Barony |
| Subdivision Type: | Sovereign state |
| Subdivision Name: | Ireland |
| Subdivision Type1: | County |
| Subdivision Name1: | Kildare |
| Area Total Km2: | 34.37 |
| Area Total Sq Mi: | 13.27 |
Kilcullen is a barony in County Kildare, Ireland.
Kilcullen derives its name from the villages of Old Kilcullen and Kilcullen Bridge (Irish Cill Chuillinn, "holly church").
Kilcullen barony is found in southeast County Kildare, reaching from Dún Ailinne to the border with County Wicklow.
Kilcullen barony was part of the ancient lands of the Ó Cuilen (Cullen) sept. These were part of the ancient lands of the Ua Tuathail (O'Tooles) before the 13th century, retaken in the 14th.[1]
Below is a list of settlements in the Kilcullen barony: