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 Azees Nedumangad, Rony David Raj, Shabareesh Varma, Kishore and Vijayaraghavan. It was produced by Mammootty under the banner of Mammootty Kampany and was 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 across 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 with praise for its cast performances, direction, script, cinematography and musical score. The film was a major commercial success and earned ₹82 crore worldwide, emerging to become one of the highest-grossing Malayalam film of all time and the fourth highest-grossing Malayalam film of 2023.