One of the most popular Sri Lankan theater personalities, Dharmapriya Dias is best known for his role as Stanley in the 2008 movie Machan. He won the Best Actor Award at the Sarasavi Cinema Awards in 2008 for his performance in Machan. A prominent theater figure, Dharmapriya has won several theater awards in acting, set designing, and choreography including the Merit Award for Acting at the State Drama Festival in 2001 for his performance in the play Asinamali.
Dharmapriya, who also teaches Drama and Theatre at Shasthrananda Vidyalaya, Dehiwala, holds a Masters degree in Drama and Theatre from the University of Kelaniya. He has appeared in films such as Matha (2012) and Burning Birds (2016). In 2017, he appeared in Sujeewa Gunarathnes epic fantasy movie Kaala starring Mahendra Perera and Madani Malwaththa in pivotal roles.