The 1989–90 WHL season was the 24th season for the Western Hockey League. Fourteen teams completed a 72 game season. The Kamloops Blazers won the President's Cup.
Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalties in minutes
1990 WHL Playoffs
- Swift Current defeated Brandon 5–4 OT in sixth place tie-breaker game.
- Lethbridge and Prince Albert earn byes to Division Semifinals.
- Regina defeated Swift Current 3 games to 1.
- Saskatoon defeated Medicine Hat 3 games to 0.
- Lethbridge defeated Saskatoon 4 games to 3.
- Prince Albert defeated Regina 4 games to 3.
- Kamloops defeated Spokane 5 games to 1.
- Seattle defeated Tri-City 5 games to 2.
- Lethbridge defeated Prince Albert 4 games to 3.
- Kamloops defeated Seattle 5 games to 1.
- Kamloops defeated Lethbridge 4 games to 1.
On January 26, the East division defeated the West division 9–6 at Kennewick, Washington before a crowd of 5,059.
|Most Valuable Player - Four Broncos Memorial Trophy: Glen Goodall, Seattle Thunderbirds
|Scholastic Player of the Year - Daryl K. (Doc) Seaman Trophy: Jeff Nelson, Prince Albert Raiders
|Top Scorer - Bob Clarke Trophy: Len Barrie, Kamloops Blazers
|Most Sportsmanlike Player - Brad Hornung Trophy: Bryan Bosch, Lethbridge Hurricanes
|Top Defenseman - Bill Hunter Trophy: Kevin Haller, Regina Pats
|Rookie of the Year - Jim Piggott Memorial Trophy: Petr Nedved, Seattle Thunderbirds
|Top Goaltender - Del Wilson Trophy: Trevor Kidd, Brandon Wheat Kings
|Coach of the Year - Dunc McCallum Memorial Trophy: Ken Hitchcock, Kamloops Blazers
|Executive of the Year - Lloyd Saunders Memorial Trophy: Russ Farwell, Seattle Thunderbirds
|Regular Season Champions - Scotty Munro Memorial Trophy: Kamloops Blazers
|Marketing/Public Relations Award - St. Clair Group Trophy: Jeff Chynoweth, Lethbridge Hurricanes
|WHL Plus-Minus Award: Len Barrie, Kamloops Blazers