Volga Bulgaria, or Volga–Kama Bolghar, is a historic Islamic Bulgar state that existsbetween the seventh and thirteenth centuries around the confluence of the Volga and Kama rivers, in what is now European Russia.

The population is mostly Bulgars, who had conquered Finno-Ugrics and Turkic speakers of the region.

The population is originally pagan, but Islam is adopted as the state religion in the early tenth century.