Rajaputra Rahasyam (transl. Secret of the King's Son) is 1978 Indian Telugu-language swashbuckler film, produced by Yarlagadda Lakshmaiah Chowdary and C. S. Rao under the Jayalakshmi Movies banner and directed by S. D. Lal. It stars N. T. Rama Rao, Jaya Prada and music composed by K. V. Mahadevan.