Osafune, Okayama

{{nihongo|Osafune|長船町|Osafune-chō}} was a town located in Oku District, Okayama Prefecture, Japan.

As of 2003, the town had an estimated population of 12,431 and a density of 424.27 persons per km². The total area was 29.30 km².

On November 1, 2004, Osafune, along with the towns of Oku and Ushimado (all from Oku District), was merged to create the city of Setouchi.{{Cite web |title=瀬戸内市のあゆみ |url=https://www.city.setouchi.lg.jp/soshiki/7/3188.html |access-date=2024-02-14 |website=瀬戸内市 |language=ja |quote=瀬戸内市は、平成16年11月1日に牛窓町、邑久町、長船町が合併して誕生しました。}}