Padmanabhan Balachandran Nair was an Indian writer, playwright, scenarist, director, and actor. He was known for his work in Malayalam literature and Malayalam cinema.

Ulladakkam (transl. Content) is 1991 Indian Malayalam-language psychological thriller film directed by Kamal and written by P. Balachandran from a story by Cheriyan Kalpakavadi. It stars Mohanlal, Shobana and Amala Akkineni. The film, produced by Suresh Balaje features a soundtrack composed by Ouseppachan. The plot follows a psychiatrist, Dr. Sunny (Mohanlal) and one of his patients, Reshma (Amala), who gets obsessed with him romantically, but Sunny is already engaged with Annie (Shobana). The film explores the phenomenon of transference.