Mozhginsky District is an administrative and municipal district (raion), one of the twenty-five in the Udmurt Republic, Russia. It is located in the southwest of the republic. The area of the district is 1,997 square kilometers (771 sq mi). Its administrative center is the town of Mozhga. Population: 28,293 (2010 census); 30,358 ; 30,236 (1989 Soviet census).