Tabunsky District (Russian: Табу́нский райо́н) is an administrative and municipal district (raion), one of the fifty-nine in Altai Krai, Russia. It is located in the northwest of the krai. The area of the district is 1,960 square kilometers (760 sq mi). Its administrative center is the rural locality (a selo) of Tabuny. As of the 2010 Census, the total population of the district was 10,057, with the population of Tabuny accounting for 38.5% of that number.