| Intro | American politician |
| Is | Politician |
| From | United States of America |
| Type | Politics |
| Gender | male |
| Birth | 22 November 1861, Cape Breton Island, Nova Scotia, Canada |
| Politics | Democratic Party |
William H. MacInnis (born November 22, 1861) was an American politician who served as a member of the Massachusetts Senate and Mayor of Pittsfield, Massachusetts.