Kunniyur is a village in Thiruvarur district in, Tamil Nadu, India. It is near the town of Mannargudi.
As per the 2001 census, Kunniyur had a population of 1700 with 864 males and 836 females.
Kunniyur was home to a mirasdari which covered over . The name Kunniyur has become famous because of the last Shri. Kunniyur Sambasiva Iyer.