was a village located in Takaoka District, Kōchi Prefecture, Japan.

As of 2003, the village had an estimated population of 1,602 and a density of 15.95 persons per km<sup>2</sup>. The total area was 100.41&nbsp;km<sup>2</sup>.

On January 1, 2006, Ōnomi was merged into the expanded town of Nakatosa.

  • Official website of Nakatosa [http://www.town.nakatosa.lg.jp/english/ ] [http://www.town.nakatosa.lg.jp/ ]