Callan is a town and civil parish in County Kilkenny in Ireland. Situated 16 km (10 mi) south of Kilkenny on the N76 road to Clonmel, it is near the border with County Tipperary. It is the second largest town in the county, and had a population of 2,475 at the 2016 census. Callan is the chief town of the barony of the same name.

The Congregation of Christian Brothers is a worldwide religious community within the Catholic Church, founded by Edmund Rice.