Engal Thangaraja is a 1973 Tamil-language film directed and produced by V. B. Rajendra Prasad.
The movie stars Sivaji Ganesan, Manjula, and Sowcar Janaki, and serves as a remake of the 1972 Telugu film Manavudu Danavudu.
The plot loosely draws inspiration from Robert Louis Stevenson's classic novel The Strange Case of Dr Jekyll and Mr Hyde, exploring themes of dual identity.
The soundtrack was composed by K. V. Mahadevan, featuring lyrics by Kannadasan, with one memorable song, "Iravukkum Pagalukkum," becoming widely popular upon its release.
The film was well-received critically and commercially, running successfully in theaters for over 100 days.