Cold Case is a 2021 Indian Malayalam-language crime thriller horror film directed by Tanu Balak and written by Sreenath V. Nath, that stars Prithviraj Sukumaran and Aditi Balan in the lead roles and also features Pooja Mohanraj, Anil Nedumangad, Lakshmi Priyaa Chandramouli, Anand, and Rajesh Hebbar in supporting roles. The plot follows two parallel investigations of a paranormal murder case by IPS officer M. Sathyajith (Prithviraj) and investigative journalist Medha Padmaja (Aditi), who eventually cross paths.

The film marks the directorial debut of cinematographer Tanu Balak. With a formal announcement made in September 2020, the principal shooting of the film began on 31 October, and was completed on 7 December 2020. It was filmed mostly in Trivandrum, with filming lasting around 36 days. Prakash Alex composed the film score while Gireesh Gangadharan and Jomon T. John jointly handled the cinematography, and Shameer Muhammed edited the film. Cold Case was released on 30 June 2021 on Amazon Prime Video, bypassing theatrical release due to COVID-19-related cinema closures.