The Mahajati Sadan in Kolkata (Calcutta), West Bengal, is a fully air-conditioned theatre, in which exhibitions and cultural programs in the city are conducted. It was established in 1958 and has 1309 seats.

The exhibitions conducted in this theatre include life and times of freedom fighters and also other cultural activities. This theatre can be considered as a heritage, since it is associated with the political and cultural history of Kolkata. There is also a library within the theatre where you get books and periodicals.