| Frederick Mackenzie | |
| Constituency Mp: | Montreal West |
| Parliament: | Canadian |
| Predecessor: | John Young |
| Successor: | Thomas Workman |
| Term Start: | 1874 |
| Term End: | 1875 |
| Birth Date: | 10 April 1841 |
| Birth Place: | Montreal, Canada East |
| Death Place: | Boston, Massachusetts[1] |
| Party: | Liberal |
Frederick Mackenzie (April 10, 1841 - July 2, 1889) was a lawyer and politician in Quebec.
He was born in 1841 at Sherbrooke Street in Montreal. He was the son of John Gordon Mackenzie (1796–1881), a wealthy dry goods merchant and native of Dingwall. Mackenzie's mother was a daughter of the Hon. Horatio Yates.[2] Mackenzie was educated at McGill University and was called to the Lower Canada bar in 1862.
Frederick Mackenzie was a captain in the militia and served during the Fenian raids. He was a lay secretary for the Church of England in Quebec and Montreal.[3] His election in 1874 was declared void by reason of bribery by his agents;[4] he was elected again in a by-election held in December that year. That election was also declared void and Thomas Workman was elected in a by-election held the following year.
Mackenzie represented Montreal West in the House of Commons of Canada from 1874 to 1875 as a Liberal member.