Boyle (/ˈbɔɪl/; Irish: Mainistir na Búille) is a town in County Roscommon, Ireland. It is located at the foot of the Curlew Mountains near Lough Key in the north of the county. Carrowkeel Megalithic Cemetery, the Drumanone Dolmen and the popular fishing lakes of Lough Arrow and Lough Gara are also close by. The population of the town was 3,000 in 2010 and 5,110 in 2011 including a rural area.