The Mudikondan River is a distributary of the Kaveri River. It branches out from the Kaveri near Papanasam and runs for about 50 kilometres (31 mi) before joining the Tirumalarajanar River near the town of Mudikondan in Tiruvarur district.

10°52′53″N 79°36′42″E / 10.88139°N 79.61167°E / 10.88139; 79.61167