Kadathu is a 1981 Indian Malayalam film, directed by P. G. Vishwambharan. The film stars Prem Nazir, Shankar, M. G. Soman and Roja Ramani in the lead roles. The film has musical score by Shyam. Actually, the script was penned by Priyadharshan. When the movie screened in the theaters, he noticed the credit had gone to the director himself.