Sivappu Sooriyan (transl. Red Sun) is a 1983 Indian Tamil-language action film directed by Muktha Srinivasan,^[1] starring Rajinikanth, Radha and Saritha. The film, released on 27 May 1983,^[2] was a box office failure.^[3]

This article needs an improved plot summary. (May 2022)

Vijay, a merchant navy officer, comes home on leave to meet his sister Selvi and her husband Vishwanthan but finds them missing. In his search for them, he bumps into Chitra who falls in love with him. With Chitra's help, Vijay is able to find Selvi, but is shocked when he learns that her husband has vanished and she has stopped speaking. Unable to make Selvi speak but determined to resolve her troubles, Vijay with the help of his friend Vidyasagar discovers that Vishwanathan had testified in court against a dangerous criminal and is being held hostage by his associates. Vijay decides to disguise himself as a smuggler and gets into the underworld. Whether he is able to retrieve Vishwanathan and bring normalcy to Selvi's life forms the rest of the story.

The music was composed by M. S. Viswanathan, with lyrics by Vaali.^[4][5]

Jayamanmadhan of Kalki panned the film.^[6]