Kwak Sun-young (Korean: 곽선영) is a South Korean actress. In 2006 she began her career in musical theater, starring in musical Dalgona. She starred in the stage adaptation of Goong and Full House, among many other musicals and plays. After over a decade on the stage, Kwak made her television debut in 2018.
Kwak was born in Seoul. Kwak's first contact with the stage was in high school, when she joined the theater department, even though she wanted to join a band instead. She studied acting at Dongguk University. Later in 2010, she enrolled in graduate school to pursue a master's degree in Performing Arts. After graduating, Kwak made her debut on the stage in the musical Dalgona in 2006. She played Seon, Catsby's girlfriend, in the musical The Great Catsby. In 2014, Kwak was cast in a musical adaptation of the television series Full House. In 2015, she appeared in her first stage play, My Life is Pounding. In 2016, she joined another musical production, Julie and Paul.
In 2018, Kwak started auditioning for advertisements and was cast in "Mom's Side", an advertisement for the energy drink Bacchus-F, which became popular and lead to her being cast in other advertisements and in her first television productions. That same year, she made her first television appearance in a mini-series, where Kwak plays Song Ji-yeon, a victim of sexual assault. She later got her first supporting role as Song Hye-kyo's best friend and personal secretary. In 2020, Kwak starred in a medical drama, as Lee Ik-sun, younger sister of Lee Ik-jun (Jo Jung-suk) and love interest of Kim Jun-wan (Jung Kyung-ho). That same year, Kwak joined another theater production, Lungs.
