Richard Dewhurst (May 26, 1826 – October 13, 1895) was an English American immigrant, lawyer, judge, businessman, and politician. He served in the Wisconsin State Assembly for four non-consecutive 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.