Founded in 1997 by North Canberra's Croatian community, the club currently competes in the National Premier Leagues Capital Football ACT.

The Knights finished premiers of State League One (division two), beating former NSL club Canberra City to top spot by six points.

[4] O'Connor finished sixth in the Premier League in its first season in the top flight, missing out on the finals series by five points.

The two sides met again in the grand final, at Hawker Enclosed, where a fifteen-minute goal to D.Camara secured the championship for Canberra Deakin over O'Connor.

Saturday 8 September 2007, The Knights faced-off against Canberra Olympic at the Belconnen Soccer Centre (now McKellar Park) in the minor semi-final but lost the match 1–4.

The club finished the season mid-table in sixth place behind Tuggeranong United in fifth and ahead of ANU FC in seventh, missing out on finals in the process.

On 27 August 2011, O’Connor were defeated in the semi-finals by the same opposition as the previous season (White Eagles) in what proved to be a high scoring affair (2-5) at ANU Willows 1.

[12] O’Connor then defeated ANU in the semi-finals 2-1 thanks to a second half brace of goals to Danny Krajacic to progress to the grand final directly.

[2] HNK O’Connor Knights draw its colour scheme (red, white and blue) inspiration from its Croatian heritage.

The capacity has been increased to around 3,000 people and the all-weather synthetic pitch (Tiger Turf) provides a consistent playing surface and drought proofs the venue.