Idhu Sathiyam (Eng: This is a Promise) is a 1963 Indian Tamil-language film directed by K. Shankar. The film stars S. A. Ashokan and Gemini Chandrakantha.The film was remade in Hindi as Shehzada (1972). The film was produced by G. N. Velumani under his own banner Saravana Pictures and was directed by K. Shankar.
The story was written by Ra. Ki. Music was composed by the duo Viswanathan-Ramamoorthy and the lyrics were penned by Kannadasan.
Directed by – K. Shankar
Produced by – G. N. Velumani
Written by – Maa. Lakshmanan
Story by – Ra. Ki. Rangarajan
Starring – S. A. Ashokan, Gemini Chandrakantha
Music by – Viswanathan-Ramamoorthy
Cinematography – Thambu
Edited by – K. Narayanan
Production – Saravana Films
Release date – 30 August 1963
Running time – 161 minutes
Country – India
Language – Tamil