Hamatonbetsu (浜頓別町 Hamatonbetsu-chō) is a town located in Esashi District, Sōya, Hokkaidō, Japan.
As of 2008, the town has an estimated population of 4,452 and a density of 11.55 persons per km². The total area is 401.56 km².
Hamatonbetsu's local economy depends mainly on dairy farming and a sea harvest of salmon, scallops, and crab.
Hamatonbetsu's claim to fame is its freshwater Lake Kutcharo, a world famous wetlands area home to thousands of swans making their winter migration from northern Siberia to the southern climate of Japan.
Hamatonbetsu has one local Sr. High School, and a Jr. High School as well as a Kindergarten and Nursery school within the town limits. The Hamatonbetsu Board of Education also oversees four additional elementary schools and another Jr. High school. Shanai Elementary School, Toyokanbetsu Elementary School, Usotan Elementary School, Shimotombetsu Elementary School, and Shimotombetsu Junior High School are all included.
The town of Hamatonbetsu participates in the JET Programme.
Within the town there are several local businesses including a cell phone/glasses shop, an ACOOP grocery store, two Seicomart convenience stores, two gas stations, a handful of restaurants and a number of home goods-amenities stores. There is also a park golf course and an onsen on the edge of Lake Kutcharo.
Hamatonbetsu does have its own bus terminal but if you want to take a train, one may take the bus 1.5 hours to Otoineppu station to the South.