Mount Apoi (アポイ岳 Apoi-dake) is located in the Hidaka Mountains, Hokkaidō, Japan. It is near the town of Samani. It is well known for hosting a large number of plants that are found only on Hokkaidō, such as Callianthemum miyabeanum (ヒダカソウ Hidaka-sō). The mountain is made from ultramafic rock of unknown age.
Mt. Apoi Geopark
The Mt. Apoi Geopark (アポイ岳ジオパーク) is a geopark covering whole territory of Samani. The area was declared a Japanese Geopark in 2008, and a UNESCO Global Geopark in 2015. 
- Shyun Umezawa, Yasuhiko Sugawara, and Jun Nakagawa, Hokkaidō Natsuyama Gaido 4: Hidaka Sanmyaku no Yamayama (北海道夏山ガイド4日高山脈の山やま), Sapporo, Hokkaidō Shimbunshya, 1991. ISBN 4-89363-605-7