The Kalachuris of Ratnapura were a central Indian dynasty during 11th and 12th centuries. They ruled parts of present-day Chhattisgarh from their capital at Ratnapura. They were an offshoot of the Kalachuris of Tripuri, and ruled as vassals of the parent dynasty for many years.

Ratanpur is a town and a nagar palika in Bilaspur district in the Indian state of Chhattisgarh. It is located about 25 kilometres (16 mi) from Bilaspur on National Highway 130 towards Ambikapur.