Boeunsan (Korean: 보은산) is the name of a mountain in Gangjin county, South Jeolla Province, South Korea. Its highest point is at Udubong (우두봉), 439 metres.

Boeunsan is north of Gangjin-eup in Gangjin county, and runs parallel to National Route 2.

Boeunsan is a popular area for hiking among locals in Gangjin. There are three courses, the longest of which is roughly 6 km. There are three Buddhist temples in the foothills, most notably Geumgoksa. Additionally, there are sporadic springs and exercise areas along the trails.

• Boeunsan, guide from Gangjin county site, in Korean
• Boeunsan, from Jeollanam-do guide to natural springs, in Korean