The 1989 Canadian Football League 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, the 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.

In September, 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.

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