Sobaeksan (Sobaek Mountain) is a mountain of the Sobaek Mountains, in South Korea. It lies between Danyang County in the province of Chungcheongbuk-do and the city of Yeongju in the province of Gyeongsangbuk-do. It has an elevation of 1,439 m (4,721 ft).
The Korea Astronomy and Space Science Institute operates an observatory on this mountain.
- Yu Jeong-yeol (2007). 한국의 산 여행 (Travel Guide to Korean Mountains). Seoul: 관동 상억연구회 (Kwandong). ISBN 978-89-958055-1-0.
Coordinates: 36°57′36″N 128°29′05″E / 36.96000°N 128.48472°E