|Directed by||R. Sarath|
|Produced by||M. S. Nazeer|
|Screenplay by||M. R.sarath|
|Story by||R. Sarath|
|Music by||Perumbavoor G. Raveendranath|
|Cinematography||M. J. Radhakrishnan|
|Edited by||Beena Paul|
Sayahnam (English: Twilight) is a 2000 Malayalam feature film that marks the directorial debut of R. Sarath with screenplay by himself. The film is a drama centred on the environmental and anti-nuclear issue in India. It stars O. Madhavan, Gomathi Mahadevan, Ebrahim Kutty, Alex Kadavil, Jomol and Remya Nambeesan. It won seven Kerala State Film Awards and two National Film Awards.
An old man K.K. Madhavan noted for his thinking and stance on social issues is proud of his scientist son Siddharthan but upset about the country's involvement in nuclear tests.
He continues his crusade against nuclear weapons but together with his loyal wife Bharathi finds himself increasingly isolated as his own son, his party and the country celebrate the nuclear advances made in India.
- Indira Gandhi Award for Best Debut Film of a Director - R. Sarath (director) and M. S. Nazeer (producer)
- National Film Award for Best Feature Film in Malayalam - R. Sarath
- Best Film - Sayahnam
- Best Actor - O. Madhavan
- Best Story - R. Sarath
- Best dubbing artist - Gopalakrishnan
- Best Male Singer - Vidhu Prathap
- Best Editing - Beena Paul
- Best Art Direction - A. V. Gokul Das