Kaloor Dennis is an Indian film scriptwriter and novelist. He works predominantly in Malayalam cinema. He started his career with Anubhavangale Nandi in 1979. He worked in more than 100 Malayalam movies with the areas of his contribution including script, story and dialogue. Popular movies scripted by him are Raktham (1981), Aa Rathri (1983), Sandarbam (1984), January Oru Orma (1986), Gajakesariyogam (1990), Mimics Parade (1991), Welcome to Kodaikanal (1992), Kudumbasametham (1992) and Paithrukam (1993). He won the 1992 Kerala State Film Award for Best Screenplay for Kudumbasametham His son Dinu Dennis has acted in the films Ottananayam (2005) and Ennitum (2006).

Raktham (transl. Blood) is a 1981 Indian Malayalam film, written by Kaloor Dennis, directed by Joshiy and produced by Jagan Appachan under Jagan Pictures. The film stars Prem Nazir, Madhu, Srividya and MG Soman in the lead roles. The film has musical score by Johnson and cinematography was handled by N. A. Thara. The film revolves around CI Haridas and his family, consisting of his wife Malathy and daughter and Viswanathan, a military man and his revenge against the people who killed his wife and threatened his family. The film marked the debut of Captain Raju as an actor.