Ek Duuje Ke Liye (Hindi: एक दूजे के लिए) is a 1981 Hindi movie directed by K. Balachander, starring Kamal Haasan and Rati Agnihotri. It was a remake of the director's own Telugu movie Maro Charithra. The film was labeled a "blockbuster" at the box office in 1981, earning a total of 10 crore (US$2 million) in receipts. One of the plus point was beautiful lyrics penned by Anand Bakshi and music by Laxmikant Pyarelal and the green locations with different moods of sea. Acting by all the characters was commendable.

The movie is about the love between a Tamil man, Vasu (Kamal Haasan), and a North Indian woman, Sapna (Rati Agnihotri), who are neighbours in Goa. They come from totally different backgrounds and can hardly speak the other's language. Their parents despise each other and they have regular skirmishes. When Vasu and Sapna admit their love, there is chaos in their homes, and their parents reject the idea.

As a ploy to separate the lovers, their parents impose a condition that Vasu and Sapna should stay away from each other for a year. After such a period, if they still want to get together, they can get married. During the year there should be no contact between them whatsoever. Vasu and Sapna reluctantly agree to the condition and decide to separate.