Bagayevskaya is a rural locality situated in the Rostov Oblast of Russia. It serves as the administrative center of the Bagayevsky District.
According to census data, the population of the locality has fluctuated over recent decades. The 2010 census recorded a population of 15,459 residents, following a count of 15,275 in 2002 and 13,608 during the 1989 Soviet census.