Kiznersky District (Russian: Кизне́рский райо́н; Udmurt: Кизнер ёрос, Kizner joros) is an administrative[1] and municipal[6] district (raion), one of the twenty-five in the Udmurt Republic, Russia.

The area of the district is 2,131.1 square kilometers (822.8 sq mi).

[3] Its administrative center is the rural locality (a settlement) of Kizner.

[4] Major rivers in the district include the Vyatka, the Kazanka, the Pyzhmanka, the Lyuga, and the Umyak.

Ethnic composition (according to the 2002 Census):[citation needed] District's economy is based on agriculture.