Yelninsky District is an administrative and municipal district (raion), one of the twenty-five in Smolensk Oblast, Russia. It is located in the southeast of the oblast and borders with Dorogobuzhsky District in the north, Ugransky District in the east, Spas-Demensky District of Kaluga Oblast in the southeast, Roslavlsky District in the south, Pochinkovsky District in the west, and with Glinkovsky District in the northwest. The area of the district is 1,808.15 square kilometers (698.13 sq mi). Its administrative center is the town of Yelnya. Population: 14,948 ; 17,457 (2002 Census); 19,699 (1989 Soviet census). The population of Yelnya accounts for 67.5% of the district's total population.

Roslavlsky District is an administrative and municipal district (raion), one of the twenty-five in Smolensk Oblast, Russia. It is located in the south of the oblast and borders with Yelninsky District in the north, Spas-Demensky District, of Kaluga Oblast, in the northeast, Kuybyshevsky District, also of Kaluga Oblast, in the east, Rognedinsky District of Bryansk Oblast in the southeast, Dubrovsky District, also of Bryansk Oblast, in the south, Yershichsky District in the southwest, Shumyachsky District in the west, and with Pochinkovsky District in the northwest. The territory of the town of Desnogorsk is enclosed from all sides by Roslavlsky District. The area of the district is 3,000 square kilometers (1,200 sq mi). Its administrative center is the town of Roslavl. Population: 76,100 ; 81,307 (2002 Census); 61,000 (1989 Soviet census). The population of Roslavl accounts for 72.1% of the district's total population.