Oshamambe is a town located in Oshima Subprefecture, Hokkaido, Japan.

The Hokkaido Shinkansen is a Japanese high-speed Shinkansen rail line that links up with the Tōhoku Shinkansen in northern Aomori Prefecture in Honshu and continues on into the interior of Hokkaido through the undersea Seikan Tunnel. Construction started in May 2005; the initial Shin-Aomori to Shin-Hakodate-Hokuto section opened on 26 March 2016. The section of the line to Sapporo is scheduled to open by fiscal year 2030. The line is operated by the Hokkaido Railway Company.