Events from the year 1721 in Canada.
Incumbents
- French Monarch: Louis XV
- British and Irish Monarch: George I
Governors
- Governor General of New France: Philippe de Rigaud Vaudreuil
- Colonial Governor of Louisiana: Jean-Baptiste Le Moyne de Bienville
- Governor of Nova Scotia: John Doucett
- Governor of Placentia: Samuel Gledhill
Events
- 800 Acadians take oath of allegiance to the French.