See also: 2003 in Canada, other events of 2004, 2005 in Canada and the list of 'years in Canada'.
Events
- January 1: Montreal Dorval Airport is renamed Pierre Elliott Trudeau International Airport.
- January 5: Canadian dollar value climbs above $ .78 US, for the first time since July 1993
- January 5: World Junior Hockey Championship Team Canada is defeated by Team USA 4-3 in the Final at Helsinki, Finland
- January 7: NHL suspends Toronto Maple Leafs's Matt Sundin after he threw his stick into the stands after it broke, no one was hurt, only suspended one game.
- January 7: Randy Ferbey wins Canada Cup opener
- January 12: Stephen Harper enters leadership race for the new Conservative Party of Canada
- January 13- President George W. Bush allows Canada to bid for contracts in Iraq.
- April 1: Federal redistricting comes into effect
- April?: Canadian federal election, 2004
- June 13: 2004 Canadian Grand Prix at Montreal, Quebec
Television
- January 12: Rick Mercer's Monday Report and This is Wonderland debuts on the CBC