Riya Sen is the grand daughter of Suchitra Sen, a legend in Bengali cinema, and daughter of Moonmoon Sen, a former actress. Before moving to Mumbai, she lived with her parents and sister Raima Sen, also an actress, in Kolkata. Her father Bharat Dev Varma belongs to the illustrious royal family of Tripura. Her paternal grandmother Ila Devi, was the princess of Cooch Behar, whose younger sister Gayatri Devi is the Maharani of Jaipur