| William P. Allen | |
| Office: | Member of the Wisconsin State Assembly |
| Term: | 1854 |
| Birth Name: | William Potter Allen |
| Birth Date: | 21 July 1818 |
| Birth Place: | New York, U.S. |
| Death Place: | Sharon, Wisconsin, U.S. |
| Party: | Whig |
| Occupation: | Politician |
William Potter Allen (July 21, 1818 – September 1, 1901) was an American politician who served as a member of the Wisconsin State Assembly in 1854.
Allen was born on July 21, 1818, in New York. He died on September 1, 1901, in Sharon, Wisconsin.
Allen was a member of the Assembly in 1854.[1] He was affiliated with the Whig Party.