Shumyachi is an urban locality located in the Smolensk Oblast of Russia. It serves as the administrative center of the Shumyachsky District.
According to census data, the population of the city has fluctuated over recent decades. The 2010 census recorded a population of 4,227 residents, following figures of 4,731 in 2002 and 5,724 during the 1989 Soviet census.