Woh Kaun Thi? (transl. Who Was She?) is a 1964 Indian Hindi-language mystery thriller film directed by Raj Khosla, starring Sadhana, Manoj Kumar and Prem Chopra. Though the screenplay was written by Dhruva Chatterjee, parts were later rewritten, wherein Manoj Kumar took an active role. Music by Madan Mohan was the asset of this movie. The film became a hit at the box office. Its success had Khosla directing Sadhana in two more suspense thrillers: Mera Saaya (1966) and Anita (1967).