Neelamalai Thirudan is a 1957 Indian Tamil-language swashbuckler film directed and edited by M. A. Thirumugam, produced by Sandow M. M. A. Chinnappa Thevar, and written by S. Ayyaiah Pillai.
The film stars R. Ranjan and Anjali Devi, with T. S. Balaiah, K. A. Thangavelu, P. S. Veerappa, M. K. Radha, E. R. Sahadevan, Kannamba, and E. V. Saroja in supporting roles.
The story revolves around a man seeking to avenge his family that was separated during his childhood due to his greedy uncle. The film originally planned with M. G. Ramachandran, but he was not available, leading to R. Ranjan being cast instead.
Neelamalai Thirudan was released on 20 September 1957 and became a success.