Wi Ha-joon (Korean: 위하준; born Wi Hyun-yi (Korean: 위현이); August 5, 1991) is a South Korean actor and model. He is best known for his roles in the films Gonjiam: Haunted Asylum (2018), Shark: The Beginning (2021) and Midnight (2021), as well as the television series Something in the Rain (2018), Romance Is a Bonus Book (2019), 18 Again (2020), and Squid Game (2021), the lattermost of which brought him international fame. In 2022, Wi was named one of GQ Korea's Men of the Year.