Park Ah-in (12 February 12, 1985) is a South Korean actress. She is an alumna of Chung-Ang University, Department of Theater and Film, where she earned a bachelor's degree in Theater Studies. She made her acting debut in 2006 in the horror film Forbidden Floor and since then has appeared in a number of films and television series, including Loner (2008), A Gentleman's Dignity (2012), Descendants of the Sun (2016), Vagabond (2019), Never Twice (2019) and Kkondae Intern (2020).