Ryu Jun-yeol (Hangul: 류준열; born 25 September 1986) is a South Korean actor. He gained popularity through his breakthrough role in the television series Reply 1988 (2015–2016). Known as a prolific Chungmuro actor, since then he has starred in the box-office hit films The King (2017), A Taxi Driver (2017), Believer (2018), Money (2019), The Battle: Roar to Victory (2019).

He pursued acting studies at Suwon University and became a prolific performer in short films and independent titles beginning in 2012. His first feature film role was a small part in the Korean Academy of Film Arts title INGtoogi: Battle of Internet Trolls. Following a flurry of shorts in 2014, Ryu next featured in the KAFA film Socialphobia. Following its debut at the Busan International Film Festival, the youth thriller became a smash hit at the box office and earned him numerous accolades, including the KAFA Rising Star Award and similar prizes from the First Brand Awards and the Max Movie Awards.