Etharkkum Thunindhavan (transl. Daredevil for anything), also known under 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, Priyanka Arul Mohan, and Vinay Rai. The music is composed by D. Imman, with cinematography and editing being handled by R. Rathnavelu and Ruben respectively. The film revolves around a lawyer who becomes an executioner against a pornography racket run by a prominent minister's son.

The project was officially announced during October 2020, under the tentative title Suriya 40. It also marked the production's first venture with Suriya, as the company had previously distributed the actor's films Ayan (2009) and Singam (2010). Filming began on 15 February 2021 and was completed within mid-November, despite losing out three months of filming due to the COVID-19 lockdown restrictions. It was primarily shot at various locations in Chennai, Madurai, Karaikudi and Courtallam, with a song sequence being shot in Goa.

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