Robert D. Haase (May 10, 1923 – September 30, 2009) was an American lawyer and Republican politician from Marinette, Wisconsin.
He was the 64th speaker of the Wisconsin State Assembly and served as Wisconsin's 20th and 26th state insurance commissioner during the administrations of governors Warren P. Knowles and Tommy Thompson.
Born in Marinette, Wisconsin, Haase served in the United States Army Air Forces during World War II.
He served on the Marinette School Board and then served in the Wisconsin State Assembly, as a Republican, from 1957 until 1965 when he resigned on September 14, 1965, to become the Wisconsin state insurance commissioner; he served as speaker of the Wisconsin Assembly in the 1963 session.
This article about a Republican Party member of the Wisconsin State Assembly born in the 1920s is a stub.