| 2018–19 OJHL season | |
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| League: | Ontario Junior Hockey League |
| Sport: | Hockey |
| Finals Champ: | Oakville Blades |
| No Of Teams: | 22 |
| Seasonslistnames: | OJHL |
| Prevseason Year: | 2017–18 OJHL |
| Nextseason Year: | 2019–20 OJHL |
The 2018-19 season was the 25th season for the Ontario Junior Hockey League.
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
| North division | GP | W | L | T | OTL | PTS | |
|---|---|---|---|---|---|---|---|
| y-Markham Royals | 54 | 29 | 18 | 2 | 5 | 65 | |
| x-Newmarket Hurricanes | 54 | 26 | 20 | 3 | 5 | 60 | |
| x-Aurora Tigers | 54 | 24 | 24 | 3 | 3 | 54 | |
| Pickering Panthers | 55 | 23 | 29 | 0 | 3 | 49 | |
| Stouffville Spirit | 54 | 12 | 37 | 1 | 4 | 29 | |
| West division | GP | W | L | T | OTL | PTS | |
| z-Oakville Blades | 54 | 44 | 5 | 2 | 3 | 93 | |
| x-Buffalo Jr. Sabres | 54 | 27 | 17 | 3 | 8 | 65 | |
| x-Burlington Cougars | 54 | 27 | 22 | 3 | 2 | 59 | |
| x-Brampton Admirals | 54 | 24 | 23 | 1 | 6 | 55 | |
| x-Georgetown Raiders | 55 | 24 | 24 | 3 | 4 | 55 | |
| Brantford 99ers | 54 | 19 | 30 | 0 | 5 | 43 |
| South division | GP | W | L | T | OTL | PTS | |
|---|---|---|---|---|---|---|---|
| z-North York Rangers | 54 | 40 | 9 | 1 | 4 | 85 | |
| x-St. Michael's Buzzers | 54 | 30 | 22 | 0 | 2 | 62 | |
| x-Toronto Patriots | 54 | 30 | 22 | 0 | 2 | 62 | |
| x-Toronto Jr. Canadiens | 54 | 27 | 23 | 1 | 3 | 58 | |
| Mississauga Chargers | 54 | 13 | 35 | 1 | 4 | 32 | |
| East division | GP | W | L | T | OTL | PTS | |
| y-Cobourg Cougars | 54 | 36 | 12 | 0 | 6 | 78 | |
| x-Trenton Golden Hawks | 54 | 33 | 14 | 4 | 3 | 73 | |
| x-Whitby Fury | 54 | 33 | 18 | 1 | 2 | 69 | |
| x-Wellington Dukes | 54 | 29 | 19 | 1 | 5 | 64 | |
| Kingston Voyageurs | 54 | 22 | 25 | 2 | 5 | 51 | |
| Lindsay Muskies | 54 | 8 | 42 | 0 | 4 | 20 |