Mountcollins (Irish: Chnoc Uí Choíleáin) is a village in the extreme south west of County Limerick, Ireland, barely 100 metres from the border with County Kerry and just a mile from County Cork. The River Feale runs parallel to the village and is fed by the Caher River that divides the village. Mountcollins is in the Parish of Mountcollins-Tournafulla.