This was Forge FC's first season without any matches in international competitions after having failed to qualify for the 2023 CONCACAF Champions League.

Forge won a record-extending fourth CPL championship, defeating regular-season champions Cavalry FC 2–1 at home in the 2023 Canadian Premier League final.

[3] This was the club's third CPL title and fourth finals appearance in four years, leading to the Canadian Premier League and several pundits to declare Forge FC to be a dynasty.

[8][9] Forge retained most of its roster from the previous season;[8][10] the club's highest profile off-season move was to add Canadian international Manjrekar James to replace outgoing cenre-back Daniël Krutzen in defence.

[15][17] Club captain Kyle Bekker served the second game of a two-match suspension following his red card in the second leg of that semifinal, while midfielder Sebastian Castello missed the match due to injury.

[17][18] Manjrekar James made his debut for the club in an entertaining match where Forge came back from 1–0 and 2–1 deficits to secure a 2–2 draw.

[20] Three days later, Forge entered the Canadian Championship in the preliminary round with a home match against FC Laval, making this the second year in a row that the Hammers hosted a PLSQ side.

[34][35] After the Wanderers took a 1–0 first half lead, Woobens Pacius scored a late 89th minute equaliser to lift the Hammers to a 1–1 draw.

[31][36][37] Notwithstanding the equalizer, Forge struggled to convert their scoring chances into goals, leading Smyrniotis to comment after the match that the team needed to "be a little more clinical in the final third [of the field].

"[36][38] For midfielder Alessandro Hojabrpour, the match was his 100th in all competitions for CPL clubs, split between Pacific FC and Forge.

[42][43] Woobens Pacius headed in an Ashtone Morgan cross in the 17th minute that stood up as the match winner as Forge won 1–0 in Langford.

[47][48] Manjrekar James was dominant in defence to help stymie Pacific and secure the clean sheet, earning him Player of the Match.

[62][ii] Forge then travelled to Montreal's Saputo Stadium to face CF Montréal on May 24 in the semi-final of the Canadian Championship.

[67][68] On May 27, David Choinière scored in second half stoppage time secure a 1–0 road win against Atlético Ottawa at TD Place Stadium.

[73] Terran Campbell scored a 76th equalizer to erase an earlier own goal from Alessandro Hojabrpour, however the match was ultimately decided in York's favour with a Brem Soumaoro stoppage time screamer.

CPL teams can name a maximum of two domestic U-18 players to this category and they do not count against the club's salary cap or 23-player main roster.

[79] The Canadian Premier League also institutes a roster freeze; after September 1, clubs may only sign new players in cases of "extreme hardship".

He had been the club's Director of Football and Business since 2018 and had been a key architect of the team's early success, including three CPL championships.

As part of the agreement, Forge will provide technical leadership and guidance to Hamilton United's coaching staff as well as season passes to their youth players.

[101][119] Forge quickly took advantage of the affiliation by sending Malcolm Duncan and Khadim Kane to Sigma to start in a match the next day.

[120][121] On September 9, Forge hosted its second annual Spark Summit, an event aimed at connecting and inspiring professional women in the sports and entertainment industry.

[128] Forge FC unveiled its 2023 primary and alternate kits at a supporters event on March 14 hosted at Tim Hortons Field.

The kits continue to be produced by Macron and sponsored by Tim Hortons for a fifth consecutive season and for the first time feature sponsorship from CIBC on the left sleeve.