Nallavanukku Nallavan (transl. Goodman to the good) is a 1984 Indian Tamil-language action drama film, directed by S. P. Muthuraman and produced by AVM Productions. A remake of the 1983 Telugu film Dharmaatmudu, it stars Rajinikanth and Radhika, with Karthik, Thulasi, V. K. Ramasamy, Major Sundarrajan, Y. G. Mahendran and Visu in supporting roles. The film revolves around a worker who is bequeathed his late boss's business, earning the wrath of the boss's son who believes he swindled his father's business.

The screenplay of Nallavanukku Nallavan was written by Visu, who made minor changes to differentiate it from the Telugu original, which co-producer M. Saravanan noticed was very similar to the unsuccessful Tamil film Hitler Umanath (1982). The music of the film was composed by Ilaiyaraaja, cinematography was handled by Babu, and editing by R. Vittal.

Nallavanukku Nallavan was released on 22 October 1984, Diwali day and became a major commercial success, running for over 150 days in theatres. For his performance, Rajinikanth won numerous awards, including the Filmfare Award for Best Actor – Tamil.