|Dates||July 12 – November 5, 1989|
|Start date||November 12, 1989|
|East Champions||Hamilton Tiger-Cats|
|West Champions||Saskatchewan Roughriders|
|77th Grey Cup|
|Date||November 26, 1989|
The 1989 CFL season is considered to be the 36th season in modern-day Canadian football, although it is officially the 32nd Canadian Football League season.
The CFL Board of Governors approved the sale of the Hamilton Tiger-Cats from Harold Ballard (of Maple Leaf Gardens Limited) to David Braley on Friday, February 24. In April, the CFL announced a two-year television agreement with Carling O'Keefe Breweries for $12 million plus an additional $3 million for club promotional support.
The CFL hosted both its Annual Meetings and the Canadian College Draft for the second straight year in Hamilton.
The Toronto Argonauts played their first game at the SkyDome. The SkyDome also was the host of the 77th Annual Grey Cup game, on Sunday, November 26, when the Saskatchewan Roughriders defeated the Hamilton Tiger-Cats 43–40.
On September 7, the BC Lions were purchased by Murray Pezim.
The Canadian Interuniversity Athletic Union decided to change the location of the Vanier Cup game, from Varsity Stadium to the SkyDome. The University of Western Ontario defeated the University of Saskatchewan, 35–10 in the Vanier Cup's silver anniversary game.
On Sunday, December 31, Bill Baker decided to resign as the President and Chief Operating Officer of the CFL.
Note: GP = Games Played, W = Wins, L = Losses, T = Ties, PF = Points For, PA = Points Against, Pts = Points
|Winnipeg Blue Bombers||18||7||11||0||408||462||14|
|Ottawa Rough Riders||18||4||14||0||426||630||8|
Main article: 77th Grey Cup
The Saskatchewan Roughriders are the 1989 Grey Cup champions, defeating the Hamilton Tiger-Cats 43–40, at Toronto's SkyDome. This was Saskatchewan's first championship since 1966. The Roughriders' Kent Austin (QB) was named the Grey Cup's Most Valuable Player on Offence and Chuck Klingbeil (DT) was named Grey Cup's Most Valuable Player on Defence, while Dave Ridgway (K) was named the Grey Cup's Most Valuable Canadian.
|November 12: Division Semifinals||November 19: Division Finals||November 26: 77th Grey Cup @ SkyDome – Toronto, Ontario|
|E3||Winnipeg Blue Bombers||10|
|E3||Winnipeg Blue Bombers||30||E1||Hamilton Tiger-Cats||14|
|E2||Toronto Argonauts||7||E1||Hamilton Tiger-Cats||40|
|W3||Saskatchewan Roughriders||33||W1||Edmonton Eskimos||21|