Ōno (大野町 Ōno-chō) was a town located in Kameda District, Oshima, Hokkaidō, Japan.
As of 2004, the town had an estimated population of 10,826 and a density of 80.26 persons per km². The total area was 134.88 km².
On February 1, 2006 Ōno was merged with the town of Kamiiso, from Kamiiso District, to form the new city of Hokuto.