Moycashel (Irish: Maigh Chaisil),[1] previously the barony of Rossaughe, and before that, Delamares country,[2] is a barony in south County Westmeath, in Ireland.

The M6 motorway passes through the barony to the south of Kilbeggan and (together with the M4) links Dublin with Galway.

The N52, a national secondary road passes through Kilbeggan linking the M7 motorway from just south of Nenagh, County Tipperary to the M1 motorway north of Dundalk in County Louth.

The R446 regional road (the old N6) runs through Kilbeggan and roughly parallel to the M6, also connecting Dublin with Galway.

In addition the R389 (linking Kilbeggan to the R392 near Moyvore) and the R391 (linking Clara, County Offaly to Mullingar, County Westmeath) pass through the barony.