Labeling a specific National Hockey League fanbase as the "worst" is entirely subjective and often fueled by intense sports rivalries, passionate banter, and regional friction rather than objective metrics. Fan bases associated with dominant or big-market franchises—such as the Toronto Maple Leafs, Boston Bruins, Philadelphia Flyers, and Montreal Canadiens—are frequently labeled by opposing fans as overly aggressive, demanding, or hostile on social media and inside opposing arenas. However, this fierce reputation is usually a byproduct of immense, multi-generational passion and loyalty, as hockey supporters across all 32 markets live and die by their teams through every highs-and-lows rebuilding phase.