Nalla Thanka is a 1950 Indian Malayalam-language mythological film directed by P. V. Krishna Iyer and produced by K. V. Koshy and Kunchacko under the banner of Udaya Studios and K & K Combines. It was the second film produced at the Udaya Studios, the first being Vellinakshatram (1949). The film stars Miss Kumari in the title role along with Augustine Joseph, Vaikom Mani and Miss Omana in other supporting roles. The film is based on the legend of Nalla Thanka, which is based on a popular Tamil folk tale.

Miss Kumari (1932–1969) was an Indian actress working in the Malayalam film industry between 1949 and 1969. In the '50s and early '60s she was the most prominent female lead in the Malayalam film industry. She briefly worked as a teacher before she made her film debut in the 1949 film Vellinakshatram. She took on the stage name Miss Kumari on the sets of her second film, Nalla Thanka.