Asin was born in Cochin, Kerala, India in the Malayalam-speaking Thottumkal family which consists of her businessman dad, Joseph, and mom, Dr. Seline, who practices in Ernakulam. She attended Naval Public School in Cochin, and after obtaining her Matriculation, was enrolled in St. Theresa's Higher Secondary School. After successfully obtaining her Higher Secondary School Certificate, she enrolled in St. Theresa's College to continue studying in the Arts Faculty. After obtaining a Degree in B.A. English Literature, she assisted her dad in his business (which includes software, export of furniture and antiques) and also took up modeling on the side. Her modeling assignments included Colgate Toothpaste, and Fairever Cream.