Engal Thanga Raja is a 1973 Indian Tamil-language film, directed and produced by V. B. Rajendra Prasad. The film stars Sivaji Ganesan, Manjula, and Sowcar Janaki. It is a remake of the 1972 Telugu film Manavudu Danavudu, and loosely adapts the 1886 novel Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson.