Sandhyakku Virinja Poovu () is a 1983 Indian Malayalam-language drama film written by Thoppil Bhasi and directed by P. G. Viswambharan. It is based on the 1980 novel of the same name by P. R. Shyamala. The film features Mammootty, Shankar, Seema, Mohanlal, Prathapachandran and Adoor Bhasi in major roles. The film did well commercially.
The film features three songs written by noted poet O. N. V. Kurup and composed by Ilaiyaraaja.
On 4 March 1983, The Hindu wrote, "Century Productions' latest offering Sandhyakku Virinja Poovu directed by P. G. Vishwambaran succeeds in presenting the sentimental story of a doctor. Consequently, it also marks a departure from Vishwambaran's earlier films." the same day The Indian Express wrote, "While director P. G. Vishwambaran has excelled in his directorial role, he is supported by a tight screenplay and crisp dialogues by Thoppil Bhasi which makes the film pacy and towards the end highly suspenseful" further writing "Seema, as Dr. Bala gives a stand out performance, being particularly impressive in highly emotional sequences. She is matched in acting by Mammootty, who is advocate Jayamohan."
In 2017, The Times of India described Mammootty's role as one of the "astounding advocate roles he has given life to". Seema herself rated her role of Dr. Baladevi in Sandhyakku Virinja Poovu and as the teenage prostitute in Avalude Ravukal as her best.