Richard Dewhurst (May 26, 1826 - October 13, 1895) was an American lawyer, judge, banker and lumberman from Neillsville, Wisconsin who served in the Wisconsin State Assembly for four single discontinuous terms over four different decades (from the 1850s to the 1880s) under four different political party labels (Republican, Union, Liberal Reform and Independent); and was defeated twice when running for election on the ticket of a fifth party, the Democratic.