Detective 909 Keralathil is a 1970 Indian Malayalam-language spy film directed by P. Venu and produced by T. C. Sankar. The film stars Jayabharathi, KP Ummer, Sudheer, Vijayasree, Hemalatha, Sankaradi and Sreelatha Namboothiri. The film had musical score by M. K. Arjunan.