1921 (read as Ayirathi Thollayirathi Irupathi Onnu) is a 1988 Indian Malayalam-language war film written by T. Damodaran and directed by I. V. Sasi. The film has an ensemble cast including Mammootty, Madhu, Suresh Gopi, T. G. Ravi, Seema, Urvashi and Mukesh. Set during the 1921–22 Mappila Uprising in Madras Presidency, it tells the fictional story of Khader, a World War I veteran, who joins with the Mappila rebels during the Uprising.

Made with a budget of Rs. 12.0 million, 1921 was then, the most expensive film in Malayalam. The film was released in Kerala on 19 August 1988 during Onam festival. The film won Kerala State Film Award for Best Film with Popular Appeal and Aesthetic Value.