There were 7 teams in the 1980 ACTAFL competition, Ainslie, Belconnen, Eastlake, Manuka, Queanbeyan, Sutherland and West Canberra.
At the end of the home and away games Ainslie was on top of the table with 16 wins and no losses and a percentage of 254.
They played second team West Canberra in the Second Semi-Final at Phillip Oval. Ainslie ran out easy winners by 98 points.
- Final score: Ainslie 23.18-156 def West Canberra 8.10-58
- Goal kickers for Ainslie: Miller 7, McCormick 4, Neale 3, Mooney 2, Senjov 2, Brock 1, Davey 1, Shanley 1, C Smith 1, Gerrans 1
- Best: McCormick, Miller, Neeson, Ielasi, Heystraten
Ainslie won the 1980 Premiership by defeating Manuka 21.10-136 to 12.15-87 in the Grand Final at Manuka Oval. Ainslie went through the season undefeated to be awarded their third Championship.
- Final score: Ainslie 21.10-136 def Manuka 12.15-87
- Goal kickers for Ainslie: Neale 8, Brock 5, McCormick 4, Shanley 2, Davey 1, Senjov 1
- Best: Stone, Brock, Neale, Gerrans, McCormick,
Ken Stone won the inaugural Alex Jesaulenko Trophy for the best player in the Grand Final.
The Ainslie Team for the Grand Final was:
- Backs: Tony Ielasi, Greg Croser, Martin Smith
- Half Backs: Alan Smith, Brett Hannam, Peter Neeson
- Centres: Brian Holford, Ken Stone, Ron Davey
- Half Forwards: Terry Mooney, John Miller, Brendan Shanley
- Forwards: John Brock, Kevin Neale, Mick Senjov
- Rucks: Hans Heystraten, Phil Gerrans, Jack McCormick
- Interchange from: David Monaghan, Craig Smith, John Harper
Ainslie Coach Kevin Neale was the League’s leading goal kicker with a record total of 149 goals, including 8 in the Grand Final.