Kaalangalil Aval Vasantham is a 1976 Indian Tamil-language film directed by S. P. Muthuraman and produced by S. Baskar. The screenplay was written by Panchu Arunachalam from a story by C. N. Muthu. The film stars R. Muthuraman, Chandrakala and Srividya. It was released on 13 April 1976. The film was remade in Kannada as Hrudaya Pallavi (1987).

Plot

It's the story of 2 sisters, Rajalakshmi (Raji), and Kalpana. They live with their father, and is often visited by their uncle Santhanam from Singapore. Kalpana, the younger one is in love with Ravi. The elder sister is about to be married, when fate has it that the groom unfortunately passes away in an accident, leaving her mentally troubled obsessing herself with marriage and groom. On the persuasion of her father, kalpana is asked to marry in the hope that at least his younger daughter would be happy. With initial hesitance she later agrees. Soon after she is married her father passes away leaving the mentally challenged sister in her and his son in law's responsibility.