En Thangai Kalyani is a 1988 Indian Tamil-language film written, directed and produced by T. Rajendar. Rajender appeared in the lead role, with Sudha. The film featured Rajendar's real life children including his son Silambarasan. It was released on 5 February 1988. Silambarasan won the Best Child Artist award at the 10th Cinema Express Awards.

Plot

A man deserts his wife and his two children, Velu and Kalyani, to live with his concubine. He marries her and lives with her without taking care of his wife and children. Velu grows up with a hatred of his father. He loves sister Kalyani very much and buys everything for her. He sends her to college, but she falls in love with her co-student Kannan against the wishes of her brother and mother. Kannan turns out to be a fraud who does anything for money. Velu tries to warn Kalyani, but she elopes with Kannan and marries him. Months later, Velu finds out that his sister is ill-treated by Kannan, who is now living with a dancer. He is ready to do anything for the dancer. Kalyani becomes pregnant, and her mother meets her secretly without her son's knowledge. Soon, Kalyani has a son named Chimbu. Velu is very affectionate to his nephew but does not show it outside. Howvever, he does not speak to Kalyani and says he will never forgive her.