The Rhume is a 48 km (30 mi) long river in Lower Saxony, Germany.

The water drains with high pressure from the ground of the funnel-shaped well, known for its turquoise colour.

The Rhume then flows in northwesterly direction through the municipalities of Gieboldehausen, Katlenburg-Lindau and Northeim.

It finally joins the Leine river west of Northeim.

This article related to a river in Lower Saxony is a stub.