Rathish Ambat is an Indian film director, ad film director, and producer who works predominantly in the Malayalam film industry. He is well known for his debut film Kammara Sambhavam which was released on 14 April 2018. Over the past twenty years, he has contributed to various roles in the film and advertising industries in Kerala. He has directed advertising films in several languages, such as Malayalam, Tamil, Telugu, and Hindi.

Kammara Sambhavam is a 2018 Indian Malayalam-language period satirical action thriller film written by Murali Gopy and directed by Rathish Ambat. The film was produced by Gokulam Gopalan and stars Dileep in the titlular role, with Siddharth, Namitha Pramod, Bobby Simha, Murali Gopi, Shwetha Menon, Manikuttan, Vijayaraghavan and Siddique in prominent roles. The film marks the Malayalam film debut of Siddharth. Principal photography began on 18 August 2016 in Kochi. The film was released in India on 14 April 2018. The film won the National Film Award for Best Production Design. Despite receiving critical acclaim, the film was a box office failure.