| William Henry Ireland | |
| Office2: | Ontario MPP |
| Term Start2: | 1919 |
| Term End2: | 1934 |
| Predecessor2: | John Wesley Johnson |
| Successor2: | James Albert Faulkner |
| Constituency2: | Hastings West |
| Party: | Conservative |
| Birth Date: | 4 October 1883 |
| Birth Place: | Trenton, Ontario, Canada |
| Death Place: | Trenton, Ontario, Canada |
| Occupation: | Merchant |
| Spouse: | Mabel Adam (m. 1908) |
William Henry Ireland (October 4, 1883 - April 22, 1962) was an Ontario merchant and political figure. He represented Hastings West in the Legislative Assembly of Ontario from 1919 to 1934 as a Conservative member.
He was born in Trenton, Ontario, the son of William H. Ireland. In 1908, he married Mabel Adam. Ireland was mayor of Trenton from 1916 to 1919. He died at Trenton in 1962.[1]