Duminichi (Russian: Думиничи) is an urban-type settlement and the administrative center of Duminichsky District, Kaluga Oblast, Russia.

Tsyplakov and the landowner of the Zhizdrinsky District I.R.Labunsky began to build an iron foundry in the Nikitinsky forest dacha, which received its name from a nearby village.

The settlement that grew up near the plant, which originally consisted of several residential buildings, two factory shelters, a store, a first-aid post and a fire station, was part of the Vertena parish.

On October 24, 1927, by the Decree of the Presidium of the Supreme Soviet of the RSFSR, the village received the status of a settlement.

Particularly fierce battles for the village and the Duminichi station were conducted on January 20-23, 1942 by the regiments of the 328th rifle division of the 10th army.

In 1967 in the village (including the station) there were 7 industrial enterprises, 3 schools, 3 kindergartens, 2 clubs, 4 canteens, 28 shops, and a hospital.