Ardfinnan is a small village in County Tipperary in Ireland. It is situated on the River Suir and R665 regional road. The Catholic parish of Ardfinnan is made up of three areas: Ardfinnan, Ballybacon, and Grange. Ardfinnan is also a civil parish in the ancient barony of Iffa and Offa West. The village is located 14 km (9 mi) from the town of Clonmel and 10 km (6 mi) from Cahir via the R670 road. The population of the village is approximately 900 people.

The River Suir is a river in Ireland that flows into the Atlantic Ocean through Waterford after a distance of 185 kilometres (115 mi). The catchment area of the Suir is 3,610 km2. Its long term average flow rate is 76.9 cubic metres per second (m3/s), about twice the flow of either the River Barrow or the River Nore before these join, but a little less than the Barrow's flow when it meets the Suir 20 km downstream.