Noboribetsu is a city in Iburi Subprefecture, Hokkaido, Japan. Part of Shikotsu-Toya National Park, it is southwest of Sapporo, west of Tomakomai and northeast of Hakodate.

In Japan, onsen are hot springs and the bathing facilities and traditional inns around them. There are approximately 25,000 hot spring sources throughout Japan, and approximately 3,000 onsen establishments use naturally hot water from these geothermally heated springs.