The 1989 Hamilton Tiger-Cats season was the 32nd season for the team in the Canadian Football League and their 40th overall. The Tiger-Cats finished in first place in the East Division with a 12–6 record and played in the 77th Grey Cup game. The team lost the highest scoring Grey Cup game in the trophy's history to the Saskatchewan Roughriders by a score of 43–40. Tony Champion set a franchise record for most touchdowns in one season with 15 and was the team's nominee for Most Outstanding Player. Paul Osbaldiston nearly matched his franchise record for most converts in a single season. Osbaldiston had 47 converts, two fewer than he scored in 1988.

Offseason

CFL Draft

Preseason

Regular season

Season standings

Season schedule

Postseason

Schedule

Grey Cup

Awards and honours

1989 CFL All-Stars