Samanasu Pandian Justin Selvaraj, known by his stage name S. J. Suryah is an Indian Tamil film director, screenwriter, actor, composer, producer and music director who has worked predominantly in Tamil film industry. He sought to become an actor but started out directing, assisting Vasanth and Sabapathy.

Surya made his directorial debut with Vaali in 1999 whose success catapulted him to stardom. His other notable films include Kushi (2000), New (2004), Anbe Aaruyire (2005) and Isai (2015). He made his acting debut with New and went on to act in films like Kalvanin Kadhali (2006), Thirumagan (2007), Vyabari (2007) and appeared as the antagonist Spyder (2017),God Father-True Story of a Man(2017), Mersal (2017) and Maanaadu (2021).