Walen is a Dutch surname usually found in Belgium, and means 'Walloon' indicating someone who came from Wallonia or someone of Wallonian descent. In Netherlands; the name may have derived from the Scandinavian name Valen. Notable people with the surname include:
Amy Walen (born 1967), American politician Alec Walen (born 1965), American academic (philosophy and law) Chuck Walen, American politician Mark Walen (born 1963), American football player