Gündlischwand lies in the Bernese Oberland in the Alps on the Black Lütschine river. The municipality includes the hamlet of Zweilütschinen, so named because it is the point of confluence of the White and Black Lütschine rivers. To the north of the Black Lütschine, the municipality extends up the Sägis Valley and its small lake, and includes the slopes up to the summits of the Schynige Platte, Loucherhorn, Roteflue, Faulhorn and Sägissa () mountains. Both the Schynige Platte Alpine Garden and the adjoining summit station of the Schynige Platte railway are within the municipality. To the south of the Black Lütschine, the municipality includes the north-western slopes of the Männlichen.