Jung Hae-in (born April 1, 1988) is a South Korean actor. He first made an appearance in AOA Black's music video for "Moya" in 2013 and officially debuted through the TV series Bride of the Century the next year. He gained recognition for his main role in 2017 television series While You Were Sleeping and for his supporting role in Prison Playbook. Jung had his first lead role in the 2018 drama Something in the Rain, and followed with One Spring Night in 2019. Jung gained even greater recognition through his lead roles in D.P. (2021) and Snowdrop (2021–22).