Karthik Nagarajan is an Indian film actor and producer, who has predominantly worked in Tamil film industry. Mostly seen in supporting roles, some of his popular roles are GK in Wow Marriage (2014) and Deva from Andhadhi (2015). He has also acted in films like Iru Mugan (2016) and Lightman (2017). His 2018 releases include Veera and R. K. Nagar.