Sadhana Shivdasani (born 2 September 1941), better known mononymously as Sadhana, is an Indian actress who was one of the top stars in the 1960s and the early 1970s. Beside becoming the fashion icon for young Indian girls with her specific hair style, still known as "Sadhana cut", she became famous as Mystery Girl with her three suspense thriller films namely Woh Kaun Thi? (1964), Mera Saaya (1966) and Anita (1967), all directed by Raj Khosla.
Sadhana was nominated for prestigious Filmfare Award for Best Actress for film Woh Kaun Thi? and Waqt in 1965 and 1966. She retired from films in the mid-1970s after also directing and co-producing a few films.