Noboribetsu (登別市, Noboribetsu-shi, Ainu: nupur-pet) 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.

6 km inland from Noboribetsu City in the river valley is the smaller town of Noboribetsu-onsen (登別温泉).

The town has a range of onsen for bathing as well as other hot springs formed from different minerals for scenic viewing, and is also known for its bear park.

Noboribetsu-onsen is one of many well-known resorts in Japan, with many hotels and ryokan, and is the largest "hot spring town" in Hokkaido.