Raja Nain Singh was a Gurjar king of Meerut in 18th century.

According to a legend, the fort Parikshitgarh

Parikshitgarh

Parikshitgarh is a town and a nagar panchayat in Meerut district in the Indian state of Uttar Pradesh.-Demographics: India census, Parikshitgarh had a population of 17,399. Males constitute 52% of the population and females 48%. Parikshitgarh has an average literacy rate of 59%, lower than the...

 was built by Parikshit and restored by Nain Singh in the 18th century. The fort was dismantled in 1857, to be used as a police station.

Raja Nain Singh also renovated Digambara Jain Bada Mandir and Old Pandeshwer Temple of Hastinapur.