Panchu Arunachalam was an Indian writer, director, producer and lyricist who worked in Tamil cinema. He was mentored by poet Kannadasan who was his uncle. He also worked as a songwriter. He started producing films under his production banner named P. A. Arts.His son Subbu Panchu Arunachalam is an actor in the Tamil film industry.As a writer, he has worked in 100 films. He has also written song lyrics for more than 200 films.