Znamensky District () is an administrative and municipal district (raion), one of the twenty-three in Tambov Oblast, Russia. It is located in the southwestern central part of the oblast. The district borders with Tambovsky District in the north, Sampursky District in the east, Tokaryovsky District in the south, and with Morshansky District in the west. The area of the district is . Its administrative center is the urban locality (a work settlement) of Znamenka. Population: 18,405 (2010 Census); The population of Znamenka accounts for 33.5% of the district's total population.