Phineas Baldwin (December 4, 1824 – April 25, 1901) was a member of the Wisconsin State Assembly.
Baldwin was born on December 4, 1824, in Orford, Canada West.
Baldwin arrived in Dane County, Wisconsin, in 1854, where he became a farmer.
In 1874, he had been an unsuccessful candidate, losing to incumbent Michael Johnson.
Other positions Baldwin held include chairman (similar to Mayor) and member of the Town Board of Oregon (town), Wisconsin, alderman of Madison, Wisconsin, member and Chairman of the Dane County Board of Supervisors and Sheriff of Dane County.