Debranjan Nag is an Indian film actor who debuted with the 2004 movie Sudhu Tumi, whereas his most popular roles were seen in movies such as The Japanese Wife, Abar Byomkesh, Dui Prithibi and The Royal Bengal Tiger. He also featured in the TV series Byomkesh in the role of Mamdo. In 2017, he was part of the supporting cast in the Bengali drama movie Shunyota, directed by Suvendu Ghosh.