Naimisaranya also known as Neemsar, Nimsar or Nimkhar is a Hindu temple dedicated to Vishnu located in Sitapur district in the north Indian state of Uttar Pradesh. It is one of the Divya Desams, the 108 temples of Vishnu revered in Nalayira Divya Prabandham by the 12 poet saints, or Alwars. The temple is believed to be of significant antiquity with contributions at different times from the ruling kings. The temple is counted as one of the eight temples of Vishnu that self-manifested and is classified as Swayamvyaktha Kshetra. The holy tank Chankra Kunda is associated with the temple and it is a pilgrimage centre where people take a holy dip during festive occasions.