was a town located in the former Shima District, Mie Prefecture, Japan.
As of 2003, the town had an estimated population of 5,686 and a density of 205.72 persons per km<sup>2</sup>. The total area was 27.64 km<sup>2</sup>.
On October 1, 2004, Hamajima, along with the towns of Shima (former), Ago, Daià  and Isobe (all from Shima District), was merged to create the city of Shima and no longer exists as an independent municipality.