Karunas Sethu is an Indian actor who works primarily in the Tamil film industry. Before becoming an actor, Karunas was a `Gaana` singer. He was even a part of Yuhi Sethu`s Naiyaandi Darbar show. Karunas made his debut in the film Nandha (2012). He then went on to act in supporting roles in films like April Maadhathil (2002), Ragasiyamai (2003), Thiruda Thirudi (2003), Ambasamudram Ambani (2010), Darling (2015), Azhagu Kutti Chellam (2015) and Kathakali (2016). He has also composed music for films like Ambasamudram Ambani (2010) and Kasethan Kadavulada (2011). His 2017 release includes Pandigai and Grahanam directed by Elan.

In 2018, he appeared alongside Santhanam and Shanaya in Ram Bhala`s Telugu horror comedy Dammunte Sommera, Vada Chennai and Veede Sarrainodu. His 2020 releases include Draupathi, Soorarai Pottru, Aakasham Nee Haddhu Ra (2020) and Sangathalaivan (2021).