Cohabitation (, literally "Compaction) is a 1918 agitprop silent full feature film directed by Anatoli Dolinov, Donat Pashkovsky and . It was produced by the Petrograd Cinema Committee and scripted by Anatoli Lunacharsky, People's Commissar of Education.
A locksmith with his daughter were added to live in the apartment of a professor, as a matter of (see ) . The apartment is then visited by various factory workers and the professor decides to start lecturing in the working club. The younger son falls in love with the worker's daughter and they decide to get married. The elder son of the professor, a yunker student, dislikes the new tenants of the apartment. In the end of the film he is arrested.