Sivakumar Jayakumar (born 12 August 1977), known professionally by his mononym Siva or also as Siruthai Siva, is an Indian film director, screenwriter, lyricist and cinematographer who works primarily in Tamil cinema. Siva started his film career as a cinematographer for several Tamil, Telugu and Malayalam films. He then pursued his career as a film director and screenwriter in Telugu cinema with Souryam (2008) which was followed by Sankham (2009) and Daruvu (2012) though all these films were average grossers and unpopular.