Punnai Nallur is a village in the Thanjavur taluk of Thanjavur district, Tamil Nadu, India.

The temple of goddess Punnainallur Mariamman is located in the outskirts of Thanjavur in the Thanjavur District.

[1][2][3][4] As per the 2001 census, Pinnai Nallur had a total population of 5442 with 2700 males and 2742 females.

The sex ratio was 1016.

The literacy rate was 80.98.