Tanmaya Udhayanidhi is the daughter of actor turned politician Udhayanidhi Stalin. Tanmaya’s mother Kiruthiga Udhayanidhi is a good director. Tanmaya has a brother named Inbanidhi. She is the granddaughter of Tamil Nadu Chief minister MK Stalin. Tanmaya’s great grandfather is late M. Karunanidhi. Her father Udhaynidhi is an MLA of the Chepauk-Thiruvallikeni/Triplicane constituency.