Every Stanley Cup loser since the creation of the Stanley Cup.
Before 1914, it was possible for multiple teams to challenge for the cup each year. This is why
* The 2005 and 1919 Stanley Cup finals were both officially cancelled. The 2004/05 season was never played due to lockout, and in 1919 the finals series was cancelled due to several players on the Montreal Canadiens being sick from the Spanish flu. These Answers are coloured grey.