| Years in Canada: | 1801 1802 1803 1804 1805 1806 1807 |
| Centuries: | 18th century · 19th century · 20th century |
| Decades: | 1770s 1780s 1790s 1800s 1810s 1820s 1830s |
| Years: | 1801 1802 1803 1804 1805 1806 1807 |
Events from the year 1804 in Canada.
Incumbents
- Monarch: George III
Federal government
Governors
- Governor of the Canadas: Robert Milnes
- Governor of New Brunswick: Thomas Carleton
- Governor of Nova Scotia: John Wentworth
- Commodore-Governor of Newfoundland: Erasmus Gower
- Governor of Prince Edward Island: Edmund Fanning then Joseph Frederick Wallet DesBarres
Events
- October 8 – HMS Speedy sinks during snowstorm
- David Thompson works in Peace River country.
- Lewis and Clark start up the Missouri River.
- Merger of the North West Company and XY Fur Companies. The XY Company is absorbed by the North West Company.
- 1,400 American ships are fishing off Labrador and in the Gulf of St. Lawrence.
- The earliest Fraktur paintings appear in Lincoln County, Ontario.
- Russians return to Sitka and attack Kiksadi fort on Indian River. Russians lose the battle, but Natives are forced to flee. Baranov re-establishes trading post.
- Locks are placed at Coteau, the Cascades and at Long Sault.
Full date unknown
- McTavish Column completed
Births
- February 29 – Antoine Plamondon, artist (d.1895)
- May 12 – Robert Baldwin, politician (d.1858)
- December 13 – Joseph Howe, Premier of Nova Scotia (d.1873)
Deaths
- July 6 – Simon McTavish, fur trader and dealer in furs, militia officer, office holder, landowner, seigneur, and businessman (b.1750)