Arjun Sarja  is an actor in south Indian film industry. He started his film career with Kannada films, however, gained significant success as an actor in Tamil films. He later moved as a director and then as a producer in particular in Tamil. He was born in a family of kannada film personalities on August 15, 1964. His father Mr. J.C.Ramaswamy alias Shakti Prasad was a popular film actor who had acted in more than 200 films, noticably in Kannada and Tamil. His elder brother Kishor Sarja is also a director.

Arjun also acted in Telugu films, most popularly known for his movie 'Hanuman Junction' which was later remake/dubbed into other Sounth Indian languages. As a consequences of a number of successful action movies by Arjun, he is popularly known as Action King Arjun. Arjun started his career as a child artist in Kannada films. Arjun won the Filmfare Best Actor Award South on two occasions noticably for his film Gentleman. His popular movies in Tamil include Gentleman, Otran, Giri, Jayasurya, Ezumali and Muddalvan.