Bazarno-Karabulaksky District () is an administrative and municipal district (raion), one of the thirty-eight in Saratov Oblast, Russia. It is located in the north of the oblast. The area of the district is . Its administrative center is the urban locality (a work settlement) of Bazarny Karabulak. Population: 31,841 (2010 Census); The population of Bazarny Karabulak accounts for 30.9% of the district's total population.