The Calcutta trilogy may refer to either of the following two Bengali film trilogies:

Three films by Satyajit Ray: Pratidwandi (The Adversary) (1970) Seemabaddha (Company Limited) (1971) Jana Aranya (The Middleman) (1976)

Three films by Mrinal Sen: Interview (1971) Calcutta 71 (1972) Padatik (The Guerilla Fighter) (1973)