Mitin Mashi is a 2019 Indian Bengali detective film directed by Arindam Sil, produced by Rupa Datta and presented by Camellia Production Pvt. Ltd. The film starring Koel Mallick and Vinay Pathak, is based on the Hate Matro Tintey Din, a story by the novelist Suchitra Bhattacharya. Mallick portrays the fictional detective character, Mitin Masi, created by Bhattacharya. The film was released on 2 October 2019.