K. Rangaraj is a Tamil film director and screenwriter and producer active in 1980's. He is notable for Mohan starrer Udaya Geetham. He also directed the 1986 Kannada movie Sathya Jyothi. His notable works are Nenjamellam Neeye(1983), Ponnu Pudichirukku(1984), Udaya Geetham(1985), Geethanjali(1985), Uyire Unakkaga(1986), Sathya Jyothi(1986;Kannada), Ellaichami(1992), etc.