Shanthanu Bhagyaraj is an Indian actor who has worked predominantly in Tamil cinema. The son of actors K. Bhagyaraj and Poornima Bhagyaraj, Shanthanu appeared as a child artist in his father's Vettiya Madichu Kattu (1998), before making his debut as a lead actor in the romantic comedy Sakkarakatti (2008).He also has a YouTube channel with his wife called With Love Shanthnu Kiki.

Vaaimai is a 2016 Indian Tamil-language courtroom drama film written and directed by A. Senthil Kumar. Inspired by the script of Reginald Rose's Twelve Angry Men (1954), the film stars Shanthnu Bhagyaraj and Muktha Bhanu amongst an ensemble cast. Goundamani, Thyagarajan, Ramki, Urvashi, Manoj K. Bharathi, Prithvi Pandiarajan and Poornima Bhagyaraj are also part of the cast. Though production had begun in 2013, the film released following a production delay on 8 September 2016, garnering negative reviews.