Paarthal Pasu is a 1988 Indian Tamil-language mystery thriller film, written and directed by K. S. Gopalakrishnan. The film stars Ramarajan, Chandrasekhar, Pallavi and Sri Bharathi. It was released on 10 June 1988, and failed at the box office.
Shankar, a lawyer, gets entangled in a complex case involving deceit and murder when his fiancée, Ratna, a policewoman, learns about an illicit operation where a police officer is involved in helping a criminal run a brothel. Determined to bring the corrupt officer to justice, Ratna enlists the help of her fiancé, Shankar. Together, they navigate through a dangerous web of crime and corruption to expose the truth and seek justice.
The music was composed by Ilaiyaraaja.
The Indian Express wrote that the film "means to exploit audience's weaknesses to the hilt". This movie turned out to be a flop movie.