Wolchulsan () is a mountain located in South Jeolla Province, South Korea; and spans both Gangjin and Yeongam counties. At its peak, Cheonhwangbong, it rises to 808.7 meters, making it the highest point in Gangjin County.
It lies in a national park of the same name. Wolchulsan National Park is the smallest national park of South Korea, with an area of . A notable feature of the mountain is the "Cloud Bridge" () a small suspension bridge that spans two peaks.