Naangu Killadigal (தமிழ்: நான்கு கில்லாடிகள், English: Four clever men) is 1969 Tamil Comedy thriller film directed by L. Balu and produced by Modern Theatres. The film script was written by A. L. Narayanan. Music was by Vedha. It stars Jaishankar, R. S. Manohar, Thengai Srinivasan and Suruli Rajan playing lead, with Bharathi, Kumari Padmini, C. L. Anandan playing pivotal roles.