The 1999–2000 OPJHL season is the seventh season of the Ontario Provincial Junior A Hockey League (OPJHL). The thirty-five teams of the North, South, East, and West divisions competed in a 49-game schedule.

Come February, the top eight teams of each division competed for the Frank L. Buckland Trophy, the OPJHL championship. The winner of the Buckland Cup, the Brampton Capitals, failed to win the Dudley Hewitt Cup as Central Canadian Champions.^[1]

• League returns to 4 divisions, from 3.
• Auburn Jr. Crunch change name to Syracuse Jr. Crunch.
• Shelburne Wolves leave OPJHL.
• Caledon Canadians leave OPJHL.
• Parry Sound Shamrocks join OPJHL from NOJHL.
• St. Michael's Buzzers rejoin OPJHL.

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

Division Quarter-final

Lindsay Muskies defeated Peterborough Bees 4-games-to-none

Wellington Dukes defeated Bancroft Hawks 4-games-to-none

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

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

Brampton Capitals defeated Mississauga Chargers 4-games-to-1

Georgetown Raiders defeated Oakville Blades 4-games-to-3

Burlington Cougars defeated Milton Merchants 4-games-to-3

Streetsville Derbys defeated Hamilton Kiltys 4-games-to-3

Newmarket Hurricanes defeated Parry Sound Shamrocks 4-games-to-none

Couchiching Terriers defeated Ajax Axemen 4-games-to-none

Stouffville Spirit defeated Aurora Tigers 4-games-to-none

Collingwood Blues defeated Huntsville Wildcats 4-games-to-3

Vaughan Vipers defeated Pickering Panthers 4-games-to-none

Thornhill Rattlers defeated Oshawa Legionaires 4-games-to-1

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

Markham Waxers defeated North York Rangers 4-games-to-3

Division Semi-final

Couchiching Terriers defeated Collingwood Blues 4-games-to-1

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

Vaughan Vipers defeated Markham Waxers 4-games-to-1

Thornhill Rattlers defeated Wexford Raiders 4-games-to-1

Wellington Dukes defeated Trenton Sting 4-games-to-none

Lindsay Muskies defeated Kingston Voyageurs 4-games-to-none

Georgetown Raiders defeated Burlington Cougars 4-games-to-3

Brampton Capitals defeated Streetsville Derbys 4-games-to-none

Division Final

Couchiching Terriers defeated Stouffville Spirit 4-games-to-none

Thornhill Rattlers defeated Vaughan Vipers 4-games-to-none

Lindsay Muskies defeated Wellington Dukes 4-games-to-1

Brampton Capitals defeated Georgetown Raiders 4-games-to-none

Semi-final

Brampton Capitals defeated Couchiching Terriers 4-games-to-none

Lindsay Muskies defeated Thornhill Rattlers 4-games-to-1

Final

Brampton Capitals defeated Lindsay Muskies 4-games-to-2

Best-of-7 series

Rayside-Balfour Sabrecats (NOJHL) defeated Brampton Capitals 4-games-to-1

Rayside-Balfour 4 - Brampton 1

Brampton 4 - Rayside-Balfour 1

Rayside-Balfour 2 - Brampton 1

Rayside-Balfour 3 - Brampton 2

Rayside-Balfour 13 - Brampton 1

Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalty minutes

• Rd 3 #67 Max Birbraer - New Jersey Devils (Newmarket Hurricanes)

• 2000 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
• 1999 in ice hockey
• 2000 in ice hockey

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