Demonte Colony is a 2015 Indian Tamil-language supernatural horror thriller film written and directed by R. Ajay Gnanamuthu in his directorial debut. The film stars Arulnithi. Also starring Ramesh Thilak, Sananth and Abishek Joseph George, the film is a fictional story set at the Demonte Colony in Alwarpet, Chennai. Demonte Colony features cinematography by Aravinnd Singh, songs composed by guitarist Keba Jeremiah, and an original score by S. Chinna.

The film was released on 22 May 2015 to critical acclaim and became a blockbuster at the box office. A sequel titled Demonte Colony 2 was released in 2024.