Etharkkum Thunindhavan (transl. Daredevil for Anything), also known by the initialism ET, is a 2022 Indian Tamil-language action thriller film, written and directed by Pandiraj, and produced by Sun Pictures. The film stars Suriya, Vinay Rai and Priyanka Mohan. D. Imman composed the film's music, R. Rathnavelu handled the cinematography and Ruben edited it. The film revolves around a lawyer who opposes a pornography racket that is run by a prominent minister's son.

The project was officially announced in October 2020 under the title Suriya 40. It is the production company's first venture with Suriya; they had distributed Suriya's films Ayan (2009) and Singam (2010). Filming began on 15 February 2021 and was completed by mid-November, despite filming being delayed for a three-month period due to COVID-19 lockdown restrictions. It was primarily filmed in Chennai, Madurai, Karaikudi and Courtallam, and a song sequence was filmed in Goa.

Etharkkum Thunindhavan was released in theatres worldwide on 10 March 2022. It received mixed reviews from critics and grossed ₹175–200 crore worldwide.