* Location: Jeju Island
* Height: 1,950 m (6,398 ft)
* UNESCO World Heritage Site (2007)
* Highest mountain in South Korea
* Hallasan National Park is home to various flora and fauna, including the Jeju horse and the Hallasan fir.
Jirisan
* Location: Jeolla and Gyeongsang provinces
* Height: 1,915 m (6,283 ft)
* Highest mountain in mainland South Korea
* Jirisan National Park is home to various flora and fauna, including the Asian black bear and the Asiatic golden cat.
Seoraksan
* Location: Gangwon province
* Height: 1,708 m (5,604 ft)
* Seoraksan National Park is famous for its autumn foliage.
* Home to the Ulsanbawi rock formation, one of the most popular tourist attractions in South Korea.
Taebek Mountains
* Location: Eastern coast of South Korea
* Highest peak: Seolmasan (1,567 m / 5,141 ft)
* The mountain peaks are popular with locals and tourists, and some are used for winter sport activities.
Chiaksan
* Location: Gangwon and North Gyeongsang provinces
* Height: 1,288 m (4,226 ft)
* Home to the Chiaksan National Park.
* One of the most popular mountains for hiking and mountain climbing in South Korea.
