David E. Clarenbach (born September 26, 1953) is a Wisconsin Democratic politician who served nine terms in the Wisconsin State Assembly. He represented the 78th Assembly District in Madison from 1975 to 1993. He is the son of National Organization for Women co-founder Kathryn F. Clarenbach and was born in St. Louis, Missouri. He was educated in Madison public schools, and studied politics at the University of Wisconsin–Madison from 1971 to 1976.