| William Hiner | |
| Office: | President pro tempore of the |
| Term Start: | January 10, 1877 |
| Term End: | January 7, 1878 |
| Predecessor: | Robert L. D. Potter |
| Successor: | Levi W. Barden |
| State Senate1: | Wisconsin |
| District1: | 18th |
| Term Start1: | January 1, 1872 |
| Term End1: | January 7, 1878 |
| Predecessor1: | Samuel D. Burchard |
| Successor1: | Alonzo A. Loper |
| Order2: | 14th |
| Title2: | Mayor of Fond du Lac, Wisconsin |
| Term Start2: | April 1867 |
| Term End2: | April 1868 |
| Predecessor2: | James Sawyer |
| Successor2: | C. J. L. Meyer |
| Term Start3: | October 1865 |
| Term End3: | April 1866 |
| Predecessor3: | Jared M. Taylor |
| Successor3: | James Sawyer |
| Party: | Republican |
| Birth Date: | 16 December 1821 |
| Birth Place: | Bedford, Pennsylvania, U.S. |
| Death Place: | Fond du Lac, Wisconsin, U.S. |
| Restingplace: | Rienzi Cemetery, |
William Henry Hiner (December 16, 1821April 29, 1880) was an American manufacturing businessman, and Republican politician, and Wisconsin pioneer. He was the 14th mayor of Fond du Lac, Wisconsin, and represented Fond du Lac County for six years in the Wisconsin State Senate. He also served as president pro tempore of the Senate during the 1877 session.
Born in Bedford, Pennsylvania,[1] he moved to Fond du Lac, Wisconsin in 1850.[1] He was one of the owners of the Union Iron Works in Fond du Lac. He served on the Fond du Lac County, Wisconsin Board of Supervisors and on the Fond du Lac Common Council. Hiner also served as mayor of Fond du Lac. From 1872 until 1879, he served in the Wisconsin State Senate, as a Republican, and also served as President pro tem of the Wisconsin Senate.[2] He died in Fond du Lac, Wisconsin, in 1880.[1] [3]