Namak Haraam (transl. Traitor) is a 1973 Indian Hindi-language drama film directed by Hrishikesh Mukherjee. The music is by R. D. Burman, the screenplay by Gulzar, and lyrics by Anand Bakshi. The film stars Rajesh Khanna and Amitabh Bachchan. It also stars Rekha, Asrani, Raza Murad, A. K. Hangal, Simi Garewal and Om Shivpuri. Rajesh Khanna received his third BFJA Awards for Best Actor (Hindi) in 1974 for this film and Amitabh Bachchan had won his second Filmfare Award for Best Supporting Actor in 1974.

This was the second Hrishikesh Mukherjee film that starred Khanna and Bachchan after Anand. "Diye Jalte Hai", "Nadiya Se Dariya" and "Main Shayar Badnaam" are the most memorable melodies, all rendered powerfully by Kishore Kumar and picturised on Rajesh Khanna. And Kaka, as he was called by friends and fans alike, won the hearts of millions by his meaningful acting and face impressions. The film proved out to be a box office superhit and was the 5th highest-grossing film of 1973. The film was remade in Tamil as Unakkaga Naan. The core plot of the movie was based on the sub-plot of the 1967 Telugu movie Prana Mithrulu which itself was loosely inspired by the storyline of the 1964 movie Becket.