Chetan Kumar, also known as Chetan Ahimsa, is an American Kannada-language film actor. Chetan made his on-screen debut in the 2007 cult classic film Aa Dinagalu, which earned him the Udaya Film Award for Best Debut Actor Male. His most recent success came in the 2013 hit film Myna, for which his performance received strong critical acclaim.

Aa Dinagalu is a 2007 Indian Kannada-language crime drama film based on the non-fiction novel Daadaagiriya Dinagalu by Agni Shridhar, and directed by K. M. Chaitanya. It stars Chethan Kumar in the lead role. The supporting cast features Sharath Lohitashwa, Ashish Vidhyarthi, Atul Kulkarni and Veda Sastry. The plot revolves around mafia in Bangalore during the 1980s when gangsters Kotwal Ramachandra and M. P. Jayaraj dominated the Bangalore underworld. The film's soundtrack and background music was scored by Ilayaraja.