Silambarasan Tesingu Rajendar, also credited by his initials S.T.R. or nickname Simbu, is an Indian actor, director, writer, composer, dancer, music director, lyricist and playback singer in the Tamil film industry. He began his acting career by playing roles as a child artist in films directed by his father T. Rajendar, before his first lead role in Kadhal Azhivathillai (2002), under his father's direction and produced by his mother Usha. Silambarasan was born in Chennai, Tamil Nadu, as the eldest child of T. Rajendar and Usha Rajendar. He has a younger brother Kuralarasan and sister Elakkiya. From early age he was a Hindu devotee and an ardent follower of Lord Shiva. He studied at Don Bosco Matriculation Higher Secondary School. He studied at Loyola College. Silambarasan entered the film industry from a young age and acted in many of his father's films until 2002, when he acted in Kadhal Azhivathillai, his first main role as a hero. He has completed 38 years in industry now (Dated 2025) and has 45 films being released.