The Prairie Junior Hockey League is a Junior "B" ice hockey league in Saskatchewan, Canada, sanctioned by Hockey Canada.

The Keystone Cup is the Junior B ice hockey championship and trophy for Western Canada. From 1983 to 2017, the championship was the culmination of the champions of 12 hockey leagues in British Columbia, Alberta, Saskatchewan, Manitoba, and Northwestern Ontario. In 2018, citing costs for travel and accommodations, British Columbia, Alberta and Saskatchewan withdrew from competition for the Keystone Cup, making it a championship between Manitoba and Northwestern Ontario.