was a town located in Mikata District, Hyōgo Prefecture, Japan.
As of 2003, the town had an estimated population of 10,835 and a density of 105.21 persons per km<sup>2</sup>. The total area was 102.98 km<sup>2</sup>.
On October 1, 2005, Hamasaka, along with the town of Onsen (also from Mikata District), was merged to create the town of Shin'onsen.