Lee Byung-hun (이병헌; born July 12, 1970) is a South Korean actor, singer and model. He has received acclaim for his work in a wide range of genres, most notably Joint Security Area (2000); A Bittersweet Life (2005); The Good, the Bad, the Weird (2008); I Saw the Devil (2010); Masquerade (2012); Inside Men (2015); The Man Standing Next (2020); and the television series All In (2003), Iris (2009), Mr. Sunshine (2018), and Our Blues (2022). He has received multiple awards and nominations throughout his career.

In the United States, he is known for portraying Storm Shadow in G.I. Joe: The Rise of Cobra (2009) and its sequel G.I. Joe: Retaliation (2013). His other notable Hollywood films include Red 2 (2013), Terminator Genisys (2015), and The Magnificent Seven (2016). He also appeared as the Front Man in Netflix hit survival series Squid Game (2021–2025).