- a county in Connacht, in the N Republic of Ireland. 54,499; 950 sq. mi. (2,460 sq. km). County seat: Roscommon.
- an inland county of N central Republic of Ireland, in Connacht: economy based on cattle and sheep farming. County town: Roscommon. Pop: 53 774 (2002). Area: 2463 sq km (951 sq miles)
- a former name for Galway (def. 3)
