克兰河是法国的河流，位于该国西部，属于维埃纳河的左支流，河道全长144公里，流域面积3,145平方公里，发源自耶斯附近，河口处在沙泰勒罗附近。

• http://www.geoportail.fr
• The Clain at the Sandre database

The Clain is a 144 km long river in western France, left tributary of the river Vienne. Its source is near Hiesse, in the Charente department.

The Clain flows generally north through the following departments and towns:

It joins the Vienne near Châtellerault, in Cenon-sur-Vienne.