Events from the year 1811 in Canada.
- John Jacob Astor's Pacific Fur Company establishes a post at mouth of the Columbia River.
- David Thompson follows Columbia to Pacific and finishes charting entire length of the river.
- William Price Hunt, leading Astor's overland party, explores Snake River Valley and much of future Oregon Trail.
- When Governor Craig leaves for England, British Canadians detach the horses and draw his carriage to the place of embarkation.
- President James Madison, in his message to Congress, says: "We have seen the British Cabinet not only persist, in refusing satisfaction demanded for the wrongs we have already suffered, but it is extending to our own waters that blockade, which is become a virtual war against us, through a stoppage of our legitimate commerce."
- January 9 - John Ferris, businessman, explorer and politician (d.1884)
- March 11 - John Young, politician (d.1878)
- May 29 - William Pearce Howland, politician (d.1907)
- July 20 - James Bruce, 8th Earl of Elgin, Governor General (d.1863)
- August 16 - Luc-Hyacinthe Masson, physician, businessman and politician (d.1880)
- October 6 - Eulalie Durocher, catholic nun (d.1849)
- December 2 - Jean-Charles Chapais, politician (d.1885)
Full date unknown