| Howard Hadden Halladay | |
| Birth Date: | June 15, 1875 |
| Birth Place: | Elgin, Ontario, Canada |
| Death Date: | [1] |
| Death Place: | Los Angeles County, California, U.S. |
| Constituency: | Bow River |
| Term Start: | 1917 |
| Term End: | October 30, 1925 |
| Predecessor: | New District |
| Successor: | Edward Garland |
| Party: | Independent Farmer |
| Otherparty: | Unionist |
| Occupation: | politician |
Howard Hadden Halladay (June 15, 1875 – January 23, 1952) was a farmer, insurance agent, and Canadian federal politician. He served as a member of the House of Commons of Canada from 1917 to 1921, sitting as a Unionist candidate in government. He also served as a municipal politician from 1913 to 1918 as mayor of Hanna, Alberta.
Halladay began his political career on the municipal level, serving as mayor of Hanna, Alberta, from 1913 to 1918.[2]
While still mayor he ran for a seat in the Canadian House of Commons in the 1917 Canadian federal election. In that election he ran as the Unionist coalition candidate. He defeated three other candidates by a comfortable margin including future Alberta MLA Daniel Galbraith to take the new seat.[3] Halladay served as a Member of Parliament for a single term before retiring at dissolution in 1921.