The 1983–84 OJHL season is the 12th season of the Ontario Junior Hockey League (OJHL). The eight teams of the league played a 42-game season. The all eight teams made the playoffs.

The winner of the OJHL playoffs, the Orillia Travelways, won the OHA Buckland Cup and then the Dudley Hewitt Cup as Central Canadian champions. In 1984, the Callaghan Cup champion from the east did not compete in the National playdowns, so the Travelways gained a direct berth into the 1984 Centennial Cup. The Travelways failed to win the Centennial Cup.^[1]

• OJHL reverts from two-division system to a single, non-partitioned standings.
• Richmond Hill Rams become the Richmond Hill Dynes.
• Cambridge Winterhawks leave OJHL for MWJHL.

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

Quarter-final

Dixie Beehives defeated Aurora Tigers 4-games-to-none

Orillia Travelways defeated Markham Waxers 4-games-to-none

North York Rangers defeated Richmond Hill Rams 4-games-to-2

Newmarket Flyers defeated Hamilton Mountain A's 4-games-to-none

Semi-final

Orillia Travelways defeated North York Rangers 4-games-to-none

Dixie Beehives defeated Newmarket Flyers 4-games-to-3

Final

Orillia Travelways defeated Dixie Beehives 4-games-to-1

The 1984 Buckland Cup was a best-of-5 series between the Rayside-Balfour Canadians (NOJHL) and the Orillia Travelways. The winner moved on to the 1984 Dudley Hewitt Cup.

Orillia Travelways defeated Rayside-Balfour Canadians (NOJHL) 3-games-to-1

Orillia 8 - Rayside-Balfour 7 OT

Orillia 8 - Rayside-Balfour 1

Rayside-Balfour 7 - Orillia 6

Orillia 4 - Rayside-Balfour 3

The 1984 Dudley Hewitt Cup was a best-of-7 series between the Pembroke Lumber Kings (CJHL) and the Orillia Travelways. The winner moved on to the 1984 Centennial Cup.

Orillia Travelways defeated Pembroke Lumber Kings (CJHL) 4-games-to-none

Orillia 9 - Pembroke 5

Orillia 12 - Pembroke 5

Orillia 4 - Pembroke 2

Orillia 8 - Pembroke 3

The 1984 Centennial Cup was the best-of-7 Canadian National Junior A championship series between the Eastern Champion Orillia Travelways and the Western Abbott Cup champion Weyburn Red Wings (SJHL).

Weyburn Red Wings (SJHL) defeated Orillia Travelways 4-games-to-3

Orillia 6 - Weyburn 5

Weyburn 6 - Orillia 4

Weyburn 7 - Orillia 4

Orillia 2 - Weyburn 1

Orillia 8 - Weyburn 5

Weyburn 5 - Orillia 4

Weyburn 3 - Orillia 0

• Rd 2 #32 Tony Hrkac - St. Louis Blues (Orillia Travelways)
• Rd 10 #196 Tom Tilley - St. Louis Blues (Orillia Travelways)

• 1984 Centennial Cup
• Dudley Hewitt Cup
• List of Ontario Hockey Association Junior A seasons
• Thunder Bay Junior A Hockey League
• Northern Ontario Junior Hockey League
• Central Junior A Hockey League
• 1983 in ice hockey
• 1984 in ice hockey