Khislavichi is an urban locality situated in Russia. It serves as the administrative center of the Khislavichsky District within the Smolensk Oblast region. The settlement is geographically positioned along the right bank of the Sozh River.
According to census data, the population of Khislavichi has shown a gradual decline over several decades. The 2010 census recorded a population of 4,138 residents, following figures of 4,617 in 2002 and 5,013 during the 1989 Soviet census.