Thaanaa Serndha Koottam (transl. A crowd that gathered on its own) is a 2018 Indian Tamil-language crime comedy film directed by Vignesh Shivan. The film stars Suriya, alongside Karthik, Ramya Krishnan, Keerthy Suresh, Nandha, Kalaiyarasan, RJ Balaji, and Suresh Chandra Menon. The film's music was composed by Anirudh Ravichander and cinematography performed by Dinesh B. Krishnan and edited by A. Sreekar Prasad. It is a remake of the 2013 Hindi film Special 26, which was inspired by the true event 1987 Opera House heist in Mumbai.