The 1983Toronto Argonauts season was the 94th season for the team since the franchise's inception in 1873. The team finished in first place in the East Division with a 12–4–0 record and qualified for the playoffs for the second consecutive year. The Argonauts defeated the Hamilton Tiger-Cats in the Eastern Final and qualified for the Grey Cup for the second year in a row. Toronto defeated the BC Lions in the first ever Grey Cup match between the two teams, winning their 11th Grey Cup championship by a score of 18-17. The win ended a 31-year championship drought, which is the longest drought in Canadian Football League history.
During the regular season, receiver Terry Greer set a professional football record (NFL and CFL) for most receiving yards with 2003 yards. He also set a record for most 200-yard ball games in a year with three.