The Canadian team consisted of 71 athletes competing in 20 sports and was officially named on September 25, 2018.

[1] It was announced on October 4, 2018, that Canada received an additional reallocated spot in boxing, meaning the total team size was 72 athletes (33 men and 39 women).

[2] On October 3, 2018, trampolinist Jérémy Chartier was named as the flag bearer during the opening ceremony.

[3] All nations can qualify only a maximum of one team sport per gender and Canada chose men's field hockey and women's rugby sevens.

[16][17] Canada qualified a boys' team of nine athletes after a bronze medal finish at the Pan American qualification event in Guadalajara, Mexico in March 2018.

[23] Canada qualified one girls in the women's single sculls after being ranked in the top 8 (among eligible nations) at the 2017 World Championships in Trakai, Lithuania.

[25] Canada qualified a girls' team of twelve athletes after winning the North American qualification event in Las Vegas in March 2018.

[31] However, changes were made which removed gold medal favourites Gabe Mastromatteo and Margaret MacNeil, along with Alexander Pratt off the team.