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.
- 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