Udhayanidhi Stalin (born 27 November 1977) is an Indian politician, film producer and former actor who has been the 3rd and current Deputy Chief Minister of Tamil Nadu since 2024, serving under his father M. K.

In 2019, Udhayanidhi made his entrance into politics by being appointed the Youth wing Secretary of Dravida Munnetra Kazhagam party under the guidance of his father Stalin.

[11][12] He produced AR Murugadoss's science fiction film 7aum Arivu (2011), while also working as a distributor, achieving success through his four 2010 releases: Gautham Vasudev Menon's Vinnaithaandi Varuvaayaa,[13] A. L. Vijay's Madrasapattinam,[14] M. Rajesh's Boss Engira Bhaskaran[15] and Prabhu Solomon's Mynaa.

[20][21] He worked on Gethu (2016), with Amy Jackson[22] and then performed in the courtroom drama Manithan (2016), with Hansika Motwani, a remake of the Hindi film Jolly LLB.

[23] In 2017, he has worked in the comedy entertainer Saravanan Irukka Bayamaen from director Ezhil,[24] followed by Podhuvaga Emmanasu Thangam[25] and action thriller, Ippadai Vellum.

[33] Udhayanidhi Stalin introduced a robotic sewer cleaner in his constituency of Chepauk-Thiruvallikeni for the first time in Tamil Nadu on 21 June 2021.

[35][36] Udhayanidhi Stalin was sworn in as minister in Youth Welfare and Sports Development, in his father's cabinet in Tamil Nadu on 14 December 2022.

During an election rally at Dharapuram in 2021, Udhyanidhi alleged that both Sushma Swaraj and Arun Jaitley died due to stress from Prime Minister Narendra Modi, responding to comments made by the Prime Minister at Dharapuram, where Modi had said that Udhyanidhi had reached the top post in the party, sidelining many leaders.

[43] On September 2, 2023, while addressing a conference organized by the Tamil Nadu, M.K.Stalin made a controversial statement likening Sanatana Dharma to diseases like malaria and dengue.

Political leaders from the INDIA bloc, notably the Chief Minister of West Bengal Mamata Banerjee, publicly distanced themselves from Stalin's remarks, expressing their disapproval.

[44][45] Following this, senior Supreme Court lawyer Vineet Jindal reported the remarks to the Delhi Police calling them "provocative, inciting and defamatory.

[48] A letter signed by 262 notable citizens and sent to Chief Justice DY Chandrachud pressed for the Supreme Court to take up the case on its own.