Saane (in German) or Sarine (in French) is one of the largest rivers in Switzerland. It is 128 km long and has a drainage area of 1,892 km². It is a tributary of the river Aar. The source is at the foot of the Sanetschhorn, in the western part of the Bernese Oberland.

The Saane flows through the following Swiss cantons and towns:

Approximately 15 km west of Bern, the river flows into the Aar.