| Kilcoursey | |
| Native Name: | Cill Chuairsí (Irish) |
| Settlement Type: | Barony |
| Subdivision Type: | Sovereign state |
| Subdivision Name: | Ireland |
| Subdivision Type1: | County |
| Subdivision Name1: | Offaly |
| Area Total Km2: | 78 |
| Area Total Sq Mi: | 30.12 |
Kilcoursey is a barony in County Offaly (formerly King's County), Ireland.
The name Kilcoursey is from Kilcoursey Castle (also called Lehinch Castle; near Clara), which is named for Kilcoursey townland (Irish Cill Chuairsí, "Cuairseach's church").[1]
Kilcoursey barony is located in north County Offaly, south of the Gageborough River.
The Ó Sionnaigh (later Fox) O'Catharniagh (O'Carney) clan were chiefs in Kilcoursey, referred to as Muinter Tadgain, which also included Clonlonan barony in Westmeath. Ó Cearnaigh (Kearney), princes of Tethbae (Westmeath), are of this branch. The Mac Amhlaigh (MacAuley) sept are also cited as holding a portion of this barony.[2]
Below is a list of settlements in Kilcoursey barony: