What is the name of the championship series in junior ice hockey in Canada?

The championship series in junior ice hockey in Canada is known as the Memorial Cup. This prestigious tournament is contested by the top junior hockey teams from the Canadian Hockey League, which comprises three major junior leagues: the WHL (Western Hockey League), OHL (Ontario Hockey League), and QMJHL (Quebec Major Junior Hockey League).

The Memorial Cup serves to determine the national champion of junior hockey in Canada, and it honors the memory of Canadian soldiers who died in World War I. Teams that compete for the Memorial Cup include the champions of the three leagues, along with a host team, which allows for a unique competitive structure within junior hockey.

The other options, while significant in the realm of hockey, do not represent the same context. The World Junior Championship is an international tournament featuring national teams rather than junior club teams; the Canada Cup was a now-defunct international tournament that showcased national teams; and the J. Ross Robertson Cup is awarded to the OHL champion but does not encompass all of Canadian junior hockey.