2004–05 OPJHL season

• Huntsville Wildcats are reformed and changed their name to Huntsville-Muskoka Otters.
• Thornhill Rattlers change name to Thornhill Thunderbirds.

Note: GP = Games played; W = Wins; L = Losses; OTL = Overtime Losses; SL = Shootout Losses; GF = Goals For; GA = Goals Against; PTS = Points; x = clinched playoff berth; y = clinched division title; z = clinched conference title

Teams listed on the official league website.[1]

Standings listed by Pointstreak on official league website.[2]

For the Central Canada Championship, please go to the Dudley Hewitt Cup.

For the national championship, please go to the Royal Bank Cup 2005.

Divisional Quarter-final

Port Hope Predators defeated Lindsay Muskies 4-games-to-none

Wellington Dukes defeated Peterborough Stars 4-games-to-none

Trenton Sting defeated Bowmanville Eagles 4-games-to-2

Kingston Voyageurs defeated Cobourg Cougars 4-games-to-none

Aurora Tigers defeated Syracuse Jr. Crunch 4-games-to-1

Newmarket Hurricanes defeated Streetsville Derbys 4-games-to-none

Stouffville Spirit defeated Couchiching Terriers 4-games-to-2

Huntsville-Muskoka Otters defeated Collingwood Blues 4-games-to-1

Georgetown Raiders defeated Mississauga Chargers 4-games-to-none

Oakville Blades defeated Buffalo Jr. Sabres 4-games-to-none

Hamilton Red Wings defeated Brampton Capitals 4-games-to-3

Milton Icehawks defeated Burlington Cougars 4-games-to-1

Wexford Raiders defeated Oshawa Legionaires 4-games-to-none

St. Michael's Buzzers defeated Thornhill Thunderbirds 4-games-to-none

North York Rangers defeated Vaughan Vipers 4-games-to-none

Markham Waxers defeated Pickering Panthers 4-games-to-2

Divisional Semi-final

Port Hope Predators defeated Trenton Sting 4-games-to-none

Wellington Dukes defeated Kingston Voyageurs 4-games-to-1

Aurora Tigers defeated Huntsville-Muskoka Otters 4-games-to-2

Newmarket Hurricanes defeated Stouffville Spirit 4-games-to-2

Georgetown Raiders defeated Milton Icehawks 4-games-to-1

Oakville Blades defeated Hamilton Red Wings 4-games-to-1

Wexford Raiders defeated Markham Waxers 4-games-to-1

St. Michael's Buzzers defeated North York Rangers 4-games-to-1

Divisional Final

Port Hope Predators defeated Wellington Dukes 4-games-to-1

Aurora Tigers defeated Newmarket Hurricanes 4-games-to-2

Georgetown Raiders defeated Oakville Blades 4-games-to-1

St. Michael's Buzzers defeated Wexford Raiders 4-games-to-1

Semi-final

St. Michael's Buzzers defeated Port Hope Predators 4-games-to-2

Georgetown Raiders defeated Aurora Tigers 4-games-to-3

Final

St. Michael's Buzzers defeated Georgetown Raiders 4-games-to-2

Hosted by Georgetown Raiders in Georgetown, Ontario. Georgetown won the event, St. Michael's finished second.

Round Robin

Fort William North Stars (SIJHL) defeated St. Michael's Buzzers 6-4

Georgetown Raiders defeated North Bay Skyhawks (NOJHL) 7-2

St. Michael's Buzzers defeated North Bay Skyhawks (NOJHL) 4-3 (4OT)

Georgetown Raiders defeated Fort William North Stars (SIJHL) 4-0

Georgetown Raiders defeated St. Michael's Buzzers 5-4

Semi-final

St. Michael's Buzzers defeated Fort William North Stars (SIJHL) 6-2

Final

Georgetown Raiders defeated St. Michael's Buzzers 3-1

Hosted by Weyburn Red Wings in Weyburn, Saskatchewan. Georgetown finished in the semi-final.

Round Robin

Weyburn Red Wings (SJHL) defeated Georgetown Raiders 4-3

Georgetown Raiders defeated Hawkesbury Hawks (CJHL) 3-0

Georgetown Raiders defeated Portage Terriers (MJHL) 6-3

Camrose Kodiaks (AJHL) defeated Georgetown Raiders 2-1

Semi-final

Camrose Kodiaks (AJHL) defeated Georgetown Raiders 8-2

• 2005 Royal Bank Cup
• Dudley Hewitt Cup
• List of OJHL seasons
• Northern Ontario Junior Hockey League
• Superior International Junior Hockey League
• Greater Ontario Junior Hockey League
• 2004 in ice hockey
• 2005 in ice hockey

• Official website of the Ontario Junior Hockey League
• Official website of the Canadian Junior Hockey League