Puraini is one of the administrative divisions of Madhepura district in the Indian state of Bihar.

The block headquarters are located at a distance of 48 km from the district headquarters, namely, Madhepura.

Puraini is located at 26°02′35″N 87°00′46″E / 26.0430200°N 87.0126720°E / 26.0430200; 87.0126720.

Panchayats in Puraini community development block are: Kurshandi, Sapardah, Aurai, Nardah, Ganeshpur, dharmapur Puraini, Banshgopal, Makdampur and Durgapur.

[1] In the 2001 census Puraini Block had a population of 77,792.