Mannukkul Vairam (Eng: Diamond in the Sand) is a 1986 Indian Tamil film directed by Manoj Kumar and produced by Motherland Pictures. The film features Sivaji Ganesan, Sujatha, Rajesh and Murali in lead roles.
The film, had musical score by Devendran. Manoj Kumar, brother-in-law of director Bharathiraja made his directorial debut with this film. The film was released on 12 December 1986.
Directed by – Manojkumar
Produced by – Kovaithambi
Screenplay by – Manojkumar
Story by – Manojkumar
Starring – Sivaji Ganesan, Sujatha, Rajesh, Murali
Music by – Devendran
Cinematography – K. S. Selvaraj
Edited by – R. Baskaran
Production – Motherland Pictures
Release date – 12 December 1986
Running time – 138 minutes
Country – India
Language – Tamil