Riddhi Sen was born on May 19, 1998, in Kolkata, West Bengal, India. He is the son of renowned Bengali actor Kaushik Sen and dancer Reshmi Sen, and he comes from a family with a rich artistic heritage, being the grandson of actress Chitra Sen and actor Shyamal Sen. Riddhi began his acting career at a very young age, performing on stage as early as three years old. He is an alumnus of South Point School in Kolkata and has been actively involved in theatre, particularly with the group Swapnasandhani. Riddhi gained significant recognition for his role in the film "Nagarkirtan," for which he became the youngest recipient of the National Film Award for Best Actor in India. He has also been acknowledged for his contributions to theatre and cinema with various awards throughout his career. As of now, Riddhi Sen is not publicly known to be in a relationship and does not have a spouse.