The Rooigembeek is a small stream in East Flanders, Belgium. It is a left tributary of the Scheldt. In its upper course, it is called Leedsebeek. In British texts about the 1708 Battle of Oudenaarde, the stream is called Norken River, possibly after the Flemish village Nokere (Kruishoutem municipality), some 9 kilometer away.
Its source is in Wortegem (Wortegem-Petegem municipality), west of Oudenaarde. It flows in northwestern direction, and flows into the Scheldt in Asper (Gavere municipality), north of Oudenaarde. The Rooigembeek is about 12 km long.