Madras High Court Judge Justice S Nagamuthu delcared open the court at a function here.
This is part of 10 additional district courts announced by the state government.
Speaking on the occasion, Justice Nagamuthu said the court had been set up with a view to reach justice to all.
He recalled that Kumbakonam had a district court from 1806-1863.
Thanjavur District Judge N.Balasubramanian and Chief Judicial Magistrate V.Thenmozhi were among those present.