Kumylzhensky District () is an administrative district (raion), one of the thirty-three in Volgograd Oblast, Russia. Municipally, it is incorporated as Kumylzhensky Municipal District. It is located in the west of the oblast. The area of the district is . Its administrative center is the rural locality (a stanitsa) of Kumylzhenskaya. Population: 23,499 (2002 Census); The population of Kumylzhenskaya accounts for 37.1% of the district's total population.
The district was called Podtyolkovsky District from 1970âÂÂ1994.