Jung Gun-joo (; born May 26, 1995) is a South Korean actor. He has starred in several web dramas before venturing into TV broadcasts.
In 2017, Jung Gun-joo signed an exclusive contract with JYP Entertainment and made an appearance in DAY6's music video "I Like You". He starred in a web-drama by Naver Flower Ever After.
In 2019, Jung joined Blossom Entertainment and acted as one of the main cast of Extraordinary You.
Jung served in the mandatory military service at the age of 21 during his university days. He also has a barista license based on his experience working part-time at a coffee shop. Before becoming an actor, Jung studied mechanical engineering and modeled to earn pocket money.