Maloserdobinsky District () is an administrative and municipal district (raion), one of the twenty-seven in Penza Oblast, Russia. It is located in the south of the oblast. The area of the district is . Its administrative center is the rural locality (a selo) of Malaya Serdoba. Population: 9,824 (2010 Census); The population of Malaya Serdoba accounts for 44.5% of the district's total population.
There are 22 settlements in the Maloserdobinsky district.