Nalla Idathu Sammandham is 1958 Indian Tamil-language drama film directed by K. Somu. It was the debut production of writer A. P. Nagarajan, who co-produced the film with V. K. Ramasamy. The story was provided by Ramasamy himself, while the screenplay was written by Nagarajan. It stars M. R. Radha, Prem Nazir, Sowcar Janaki and M. N. Rajam. The film was released on 16 February 1958, became a box office success and a turning point in Radha's career.