Kazan is the largest city and capital of Tatarstan, Russia. The city lies at the confluence of the Volga and the Kazanka Rivers, covering an area of 425.3 square kilometres, with a population of over 1.3 million residents, and up to nearly 2 million residents in the greater metropolitan area. Kazan is the fifth-largest city in Russia, being the most populous city on the Volga, as well as within the Volga Federal District.

Tatarstan, officially the Republic of Tatarstan, sometimes also called Tataria, is a republic of Russia located in Eastern Europe. It is a part of the Volga Federal District; and its capital and largest city is Kazan, an important cultural centre in Russia. The region's main source of wealth is oil with a strong petrochemical industry.