There were seven teams in the 1983 ACTAFL Competition, Ainslie, Belconnen, Eastlake, Manuka, Queanbeyan, Tuggeranong and West Canberra.
Going into the last home and away round Ainslie and Manuka were level on games but Manuka defeated Ainslie by 4 points to gain top spot and Ainslie finished second with 14 wins and 4 losses.
Ainslie played Manuka in the Second Semi-Final at Football Park, Phillip winning by 29 points.
- Final score: Ainslie 16.16-112 def Manuka 12.11-85
- Goal kickers for Ainslie: Neale 5, Miller 4, Bellchambers 2, Cox 2, Baxter 2, Conlon 1
- Best: Ielasi, Scholes, Baxter, Miller, Stone, Hamilton, Smith
Ainslie met Eastlake in the Grand Final at Football Park, Phillip before a large crowd of 8,000.
Ainslie won all three grades repeating the history making season of 1982 when it was the first club to win all three grades.
Under Kevin Neale’s coaching Ainslie this was the sixth successive Grand Final and fourth Premiership. Neale kicked 5 goals even though recovering from a knee injury.
- Final score: Ainslie 18.13-121 def Eastlake 13.11-89
- Goal kickers for Ainslie: Neale 5, McCormick 3, Bellchambers 2, Heystraten 2, Nolan 2, Miller 1, Mooney 1, Conlan 1, Cross
- Best: Marshall, Heystraten, Bellchamers, Ielasi, Hamilton, Mooney
The Grand Final team, was:
- Backs: Tony Ielasi, Alan Smith, Gordon Marshall
- Half Backs: Peter Hamilton, Brett Hannam, Craig Smith
- Centres: Reece Conlon, Terry Mooney, Ron Davey
- Half Forwards: Ken Stone, John Miller, Tony Cross
- Forwards: Garry Cox, Kevin Neale, David Bellchambers
- Rucks: Hans Heystraten, Stephen Nolan, Jack McCormick
- Interchange from: Andrew Birzenieks, Phil Gerrans, Malcolm Scholes
Gordon Marshall was awarded the Alex Jesaulenko Medal for Best on the Ground in the Grand Final.
Hans Heystraten was Runner-up in the Mulrooney Medal 1 vote behind Tony Wynd of Queanbeyan.
At the end of the year Coach Kevin Neale left Ainslie to coach Central Districts in the SANFL. Kevin Neale played 98 games with Ainslie but only 4 in 1983 due to the knee injury and operation. The League named the “leading goalkicker award the Kevin Neale Goalkicking Award in honour of Neale. He kicked over 100 goals three season straight, a record 149 in 1980, 139 in 1981 and 125 in 1982.