Ōshima, Nagasaki (Nishisonogi)
Ōshima was a town located in Nishisonogi District, Nagasaki Prefecture, Japan.
As of 2003, the town had an estimated population of 6,046 and a density of 453.56 persons per km². The total area was 13.33 km².
On April 1, 2005, Ōshima, along with the towns of Saikai, Ōseto, Sakito and Seihi, was merged to create the city of Saikai.
