The 2015 Challenge Trophy is the national championship for men's soccer clubs competing at division 4 and below in the Canadian soccer pyramid.

[1] Twelve teams were granted entry into the competition; one from each Canadian province, as well as one from the Northwest Territories.

In addition, as the host province, Alberta is granted a second entry into the competition.

[2] Teams are selected by their provincial soccer associations; most often qualifying by winning provincial leagues or cup championships such as the Ontario Cup.

Third-placed teams from the group stage are entered into the classification tournament to determine overall rankings at the end of the tournament.