| Clonlonan | |
| Settlement Type: | Barony |
| Pushpin Map: | Ireland |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Ireland |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Leinster |
| Subdivision Type3: | County |
| Subdivision Name3: | Westmeath |
| Unit Pref: | Metric |
| Area Total Km2: | 120.7 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Timezone1: | WET |
| Utc Offset1: | +0 |
| Timezone1 Dst: | IST (WEST) |
| Utc Offset1 Dst: | +1 |
| Coordinates: | 53.3967°N -7.7931°W |
| Blank Name: | Irish Grid Reference |
| Blank Info: | N138385 |
Clonlonan [1] is a barony in south–west County Westmeath, Ireland. It was formed by 1672.[2] It is bordered by County Offaly to the south and a small part of County Roscommon at Long Island on the River Shannon to the west. It also borders four other Westmeath baronies: Kilkenny West and Rathconrath (to the north), Moycashel (to the north–east) and Brawny (to the west). The largest centre of population in the barony is the town of Moate.
Clonlonan has an area of 29820.6acres.
The Boor River runs west from near Moate, and flows into the River Shannon at the boundary of Westmeath and County Offaly.[3]
Two significant roads pass through the barony. The M6, a motorway forming part of the N6 Dublin to Galway national primary road and the N62 connecting the M6 to the M8. In addition the R390, a regional road linking Athlone to Mullingar, the R444 linking the R357 at Shannonbridge, County Offaly with the N6 and the R446, part of the old N6 prior to the motorway, also feature.
A railway line carrying several of the national rail company Iarnród Éireann's intercity services also passes through the barony.
This table[4] lists an historical geographical sub-division of the barony known as the civil parish (not to be confused with an Ecclesiastical parish).
| Name in English | Name in Irish | |
|---|---|---|
| Ballyloughloe | Baile Locha Luatha | |
| Kilcumreragh | Cill Chruimthir Fhiachrach | |
| Kilmanaghan | Cill Mhancháin | |
| Kilcleagh | – |
There are 130 townlands in the barony of Clonlonan.