The 1980 Adelaide State of Origin Carnival was the 21st Australian National Football Carnival, an Australian rules football competition. It was just the second carnival to take place under the State of Origin format.
Four states took part, the hosts South Australia, Tasmania, Victoria and the reigning carnival champions Western Australia. Football Park hosted all the fixtures, which took place in October after the football season had ended.
|Game||Winning team||Winning team score||Losing team||Losing team score||Ground||Crowd||Date|
|Semi Final 1||South Australia||22.18 (150)||Tasmania||8.13 (61)||Football Park||10,666||11 October 1980|
|Semi Final 2||Victoria||14.20 (104)||Western Australia||9.15 (69)||Football Park||10,666 (double-header)||11 October 1980|
|3rd Place Final||Western Australia||17.23 (125)||Tasmania||12.18 (90)||Football Park||17,579||13 October 1980|
|Grand Final||Victoria||15.12 (102)||South Australia||12.13 (85)||Football Park||17,579 (double-header)||13 October 1980|
|South Australia||Tasmania||Victoria||Western Australia|
At the completion of the tournament, the All-Australian team was named, based on performances during the carnival.
|B:||Ian Nankervis (Vic, Geelong)||Keith Kuhlmann (SA, Glenelg)||Geoff Southby (Vic, Carlton)|
|HB:||Ken Hunter (WA, Claremont)||Greg Phillips (SA, Port Adelaide)||Robbert Klomp (SA, Carlton)|
|C:||Robert Flower (Vic, Melbourne)||Geoff Raines (Vic, Richmond)||Brian Peake (WA, East Fremantle)|
|HF:||Darryl Sutton (Tas, North Melbourne)||Rick Davies (captain) (SA, Sturt)||Jim Jess (Vic, Richmond)|
|F:||Bruce Duperouzel (WA, St Kilda)||John Roberts (SA, South Melbourne)||Peter Carey (SA, Glenelg)|
|Foll:||Mark Lee (Vic, Richmond)||Graham Cornes (SA, Glenelg)||Garry Wilson (Vic, Fitzroy)|
|Int:||Mark Williams (SA, Port Adelaide)||Ron Stubbs (Tas, Devonport)|
|Coach:||Tom Hafey (Vic, Collingwood)|