| Henry Merkley | |
| Birth Date: | March 24, 1756 |
| Birth Place: | Albany, New York |
| Death Place: | Williamsburg, Dundas County |
| Office1: | Member of the Legislative Assembly of Upper Canada for Dundas |
| Term Start1: | 1808 |
| Term End1: | 1812 |
| Occupation: | Soldier, politician, farmer |
| Allegiance: | Great Britain Upper Canada |
| Serviceyears: | 1777 - 1784 1803 - 1814 |
| Unit: | King's Royal Regiment of New York Dundas County Militia |
| Battles: | |
Henry Merkley (1756–1836) was a farmer and political figure in Upper Canada. He represented Dundas in the Legislative Assembly of Upper Canada from 1808 to 1812.
He was born in the Thirteen Colonies, the son of Christopher Merkley, of German descent,[1] and served in the King's Royal Regiment of New York. After the American Revolution, Merkley came to Montreal and later settled in Williamsburgh Township. He was a Major in the Dundas County Militia during the War of 1812, later reaching the rank of lieutenant-colonel. Merkley was present at the Battle of Crysler's Farm.