Novodugino is a rural locality situated in the Smolensk Oblast region of Russia. It serves as the administrative center for the Novoduginsky District.
According to census data, the population of the locality has seen a gradual decline over several decades. The 1989 Soviet census recorded 4,153 residents, while the 2002 census reported 3,999 people. By the 2010 census, the population was recorded at 3,839.