Chase Salmon Osborn (January 22, 1860 – April 11, 1949) was an American politician, newspaper reporter and publisher, and explorer.

They moved north, near the Michigan border, to Florence, Wisconsin, where he ran a local newspaper and prospected for iron.

In 1900, he was unsuccessful to win the Republican nomination for Governor of Michigan, losing to Aaron T. Bliss, who won the general election.

In 1908, he served as a delegate to the Republican National Convention from Michigan to nominate William Howard Taft for U.S. president.

His tenure as governor was focused on reforms as the state deficit was eliminated; a workmen's compensation bill was sanctioned; and a presidential primary law was authorized.

In 1918 he was a candidate in the primary for United States Senator from Michigan, being defeated by fellow Republican Truman H. Newberry.

He supported Woodrow Wilson's League of Nations, and urged participation in world affairs during the 1920s and 1930s despite the consensus of isolationism during those years.

The title refers to work he did prospecting for iron ore in Wisconsin and the Michigan Upper Peninsula and reflects his love of the outdoors.

There is an undated oil painting on canvas of Governor Osborn on display at the Bay Mills Community College Library and Heritage Center in Brimley, MI.

The Student Union at the Ann Arbor campus of the University of Michigan also holds a bust of Osborn on the first floor.