Thaanaa Serndha Koottam (transl. A crowd that gathered by itself), is a 2018 Indian Tamil-language heist comedy film directed by Vignesh Shivan and produced by K. E. Gnanavel Raja. The film is an adaptation of the 2013 Hindi film Special 26, which was inspired by the 1987 Opera House heist in Mumbai. The film stars Suriya and Keerthy Suresh in the lead roles, with a supporting cast including Karthik, Ramya Krishnan, Nandha, Kalaiyarasan, RJ Balaji, and Suresh Chandra Menon. The film's music was composed by Anirudh Ravichander and cinematography performed by Dinesh Krishnan. The film had a worldwide theatrical release on 12 January 2018.