The Schlaube is a river in the district Oder-Spree, Brandenburg, Germany. It is in the Schlaube Valley Nature Park and flows more than 20 kilometres (12 mi) through the Schlaube-Valley (German: Schlaubetal), a tunnel valley of the last glacial period.Its source is east of Groß Muckrow (part of Friedland) in the Wirchenberge (hill).