Kannur Squad is a 2023 Indian Malayalam-language crime thriller film directed by Roby Varghese Raj in his directorial debut and written by Muhammed Shafi and Rony David Raj. The film stars Mammootty, alongside Rony David Raj, Azees Nedumangad, Shabareesh Varma, Kishore and Vijayaraghavan. It is produced by Mammootty under the banner of Mammootty Kampany and is based on the real story of a team of police officers who were part of the Kannur Squad, a crime investigation unit, formed by former Kannur SP S. Sreejith IPS.The film was officially announced in January 2023 under the tentative title Megastar 421, and the title of the film was announced by Mammootty on 11 February 2023 as Kannur Squad. The principal photography began on 27 December 2022. The film was shot extensively in Kerala and in other parts of India with locations including Kannur, Kasaragod, Wayanad, Ernakulam, Athirapilly, Thiruvananthapuram, Pala, Wai, Pune, Mumbai, Uttar Pradesh, Rajasthan, Belgaum, Mangalore and Coimbatore. The shooting wrapped on 6 April 2023 in Wayanad. The music is composed by Sushin Shyam, while the cinematography and editing are handled by Muhammed Rahil and Praveen Prabhakar.

Kannur Squad was released on 28 September 2023 to critical acclaim from critics who praised the cast performances, direction, screenwriting, cinematography and musical score. Kannur Squad was a major commercial success and earned ₹100 crore worldwide, emerging to become the sixth highest-grossing Malayalam film of all time and the third highest-grossing Malayalam film of the year.