Murugadoss Arunasalam, commonly known as AR Murugadoss, is an Indian director, producer, and screenwriter who predominantly works in the Tamil film industry. He is best known for directing action films mainly on social issues. In addition, he has worked in Telugu films and Hindi films. Murugadoss won the Filmfare Award for Best Director for his 2014 Tamil action drama Kaththi. Murugadoss' first break in the film industry was as an assistant director of Ratchagan. He then worked with S. J. Surya for the film Kushi before directing his first film, the Ajith starred Dheena, in 2001.