The season began on May 13, 2018, and concluded on October 13, 2018, with the CSL Championship final held at Centennial Park Stadium in Toronto, Ontario.
Andrei Malychenkov resumed his coaching duties and retained the majority of his previous roster with additional imports from Ukraine.
Following their mediocre 2017 season SC Waterloo named Radivoj Panić as the head coach, and assembled a roster with a mixture of league veterans with European imports from the Western Balkans.
Scarborough SC continued to develop as an elite club with Zoran Rajović being assigned head coach responsibilities.
[12] Rajović took advantage of the influx of European imports to the league, and a player agreement to acquire talent from York Region Shooters was negotiated.
[16] After a year of hiatus from the league, Hamilton City returned under new management with Saša Vuković as owner and head coach.
[15] The club experienced a transitional stage with fewer imports from abroad and more reliance on talent from their previous reserve team.
Real Mississauga, an academy founded by league veteran Krum Bibishkov, received a franchise in the CSL.
[17] The York Region Shooters failed to feature an active squad for the season as owner Tony De Thomasis became involved with Unionville Milliken SC.