River Allen may refer to:

Watercourses

River Allen, Northumberland The River Allen is a river in the English county of Northumberland. The river has its sources in the hills of the Northern Pennines, and is formed by the confluence of the East and West Allen rivers. The Allen is itself, a tributary of the R ...

, England * River Allen, Cornwall, England, a tributary of the River Camel *

River Allen (Truro) The River Allen ( kw, Dowr Alen, meaning ''shining river''), or St Allen River, to the north of Truro is one of two watercourses in Cornwall which share this name. The River Allen rises at Ventoneage ( kw, Fentenyk, meaning ''little spring'') ...

, England, a tributary of the Truro River

People

* River Allen (footballer) (born 1996), English footballer {{geodis