On 29 March 2021 the club announced their pre-season training camp plans in Spain.

[2] On 7 June 2021 the Canadian Premier League announced that the beginning of the 2021 regular season would occur in a bubble environment in Winnipeg, Manitoba.

"The Kickoff", as it was branded, would occur between 26 June and 24 July and all matches would take place at IG Field.

[5] As of June 22, 2021 Atlético Ottawa selected the following players in the 2021 CPL–U Sports Draft on January 29, 2021.

Updated to match played October 24, 2021Source: Canadian Premier League