Classmates is a 2006 Indian Malayalam-language coming-of-age romantic comedy-drama film directed by Lal Jose and written by James Albert. The film features an ensemble cast including Prithviraj Sukumaran and Kavya Madhavan in lead roles along with Narain, Jayasurya, Indrajith Sukumaran and Radhika in supporting roles. The story revolves around a college graduate class of 1991. In 2006, working in different corners of the world, the friends get together for a class reunion to revive the joy and laughter of their college days. On the night of the reunion, one of the students is almost murdered and goes into a coma.

Classmates was produced by Prakash Damodaran and P. K. Muralidharan through their company Arya Films, and is the company's debut production. The soundtrack album and background score were composed by Alex Paul. Classmates' cinematography was handled by Rajeev Ravi and editing was done by Ranjan Abraham. Principal photography primarily took place in and around C. M. S. College, Kottayam and Ooty and was completed in a span of 55 days, during the months of April and May.

The film was released on 25 August 2006 during Onam holiday period. The film became a major box office success, with a theatrical run of 150 days at Abhilash Complex, Kottayam. It became the highest-grossing Malayalam film of 2006. The film won two Kerala State Film Awards, five Kerala Film Critics Association Awards and three Asianet Film Awards. It was later remade into Tamil as Ninaithale Inikkum and in Telugu and Marathi as Classmates (2007) and Classmates (2015), respectively.

Classmates has since become one of the most acclaimed films of its decade, particularly for its soundtrack. It is considered by many critics as one of the best campus films in Malayalam cinema. The film developed a cult following in the years after its release and is frequently referenced in popular Keralite culture. With the release of film, the concept of alumni meet started trending in Kerala, and schools and colleges started organising such get togethers to help the ex-students keep in touch with each other. The film is now regarded as a classic in Malayalam cinema.