O'Callaghan's Mills (Irish: Muillte Uí Cheallacháin) is a community situated 26 km north of Limerick City in the County Clare, Ireland. The village takes its name from the O'Callaghan family who were large landowners in the area and a corn and grist mill built by Cornelius O'Callaghan. The community sustains a regular senior Gaelic Athletic Association hurling panel team with county championship achievements at under-age, junior and senior levels.