Ulsan HD FC, formerly Ulsan Hyundai FC and commonly known as Ulsan (울산), is a South Korean professional football club based in Ulsan that competes in the K League 1, the top tier of South Korean football league system. Founded in 1983 as Hyundai Horang-i, they joined the K League in 1984. Their home ground is Ulsan Munsu Football Stadium. The club is owned by HD Hyundai Heavy Industries.