Nalla Thanka is a landmark Malayalam film directed by P. V. Krishna Iyer, and produced by Kunchacko and K. V. Koshy. It was the second film produced at the Udaya Studios, the first being Vellinakshatram (1949). The film marked the debut of several artistes, including actors Augustine Joseph, Vaikom Mani, Miss Kumari, Miss Omana and S. P. Pillai, music director V. Dakshinamoorthy, and cinematographer P. K. Madhavan Nair. It was one of the first commercially successful Malayalam films.
Based on the legend of Nalla Thanka (Nalla Thankal in Tamil), the film had screenplay and dialogues written by Muthukulam Raghavan Pillai. Miss Kumari played the title role, while singer-stage actors Augustine Joseph and Vaikom Mani played the lead male roles.