Nootrukku Nooru () is a 1971 Indian Tamil-language psychological thriller film directed and written by K. Balachander. The film stars Jaishankar and Lakshmi, with Jayakumari, Vijaya Lalitha and Srividya in other pivotal roles. It is about a college professor who is accused by three girls of sexual harassment, just before his marriage.
Nootrukku Nooru was released on 19 March 1971. The film was remade in Hindi as Imtihan (1974).
Although Jaishankar was previously known mainly for his action-oriented roles, Balachander saw potential in him for other roles and cast him in Nootrukku Nooru.
The music was composed by V. Kumar, with lyrics by Vaali. The song "Naan Unnai" was remixed by Thaman S in Kanna Laddu Thinna Aasaiya (2013).
Jaishankar won the Film Fans' Association Best Actor Award. Balachander won the Chennai Film Fans' Association awards for Best Director and Best Story.