Reference

The Boston Bruins are legendary for their intense rivalries, particularly with other NHL teams. Here are the primary rivals of the Bruins:

1. Montreal Canadiens: This is one of the most storied rivalries in hockey, dating back to 1924. The Bruins and Canadiens have faced off numerous times, with fan bases characterized by conflicting styles: Boston is known for grittiness, while Montreal's fans cherish finesse. This rivalry has cooled somewhat in recent years, but it's still significant historically source.

   

2. Toronto Maple Leafs: In recent years, the rivalry with the Toronto Maple Leafs has intensified, fueled by several playoff encounters. This rivalry is seen by some as potentially surpassing the historic rivalry with the Canadiens, especially according to Bruins' captain Brad Marchand source.

   

These rivalries reflect not only historical battles but also the passionate fan base and geographic proximity that often ignite competitive spirit in the league.