Gadmen is a former municipality in the Interlaken-Oberhasli administrative district in the canton of Bern in Switzerland.On 1 January 2014, the former municipality of Gadmen merged into the municipality of Innertkirchen.The name Gadmen comes from the Old High German "gadum," meaning barn or small house, and was first mentioned in 1382.The municipality is in a municipal partnership with Volketswil in the Canton of Zürich.