Malnia [ˈmalɲa] (German Mallnie, 1936-45: Odergrund) is a village in the administrative district of Gmina Gogolin, within Krapkowice County, Opole Voivodeship, in south-western Poland. It lies approximately 6 kilometres (4 mi) north-west of Gogolin, 6 km (4 mi) north of Krapkowice, and 17 km (11 mi) south of the regional capital Opole.