The Kenora Thistles junior hockey club was founded in 1925 in a local Northern league with Keewatin and Norman.

In 1927, the Thistles squared off with the Port Arthur West End Juniors in a two-game series for the region.

In the playoffs, with a direct berth to the league final, the Thistles played the Fort William Juniors.

In the Memorial Cup Eastern semi-final, the Thistles had to play the Manitoba Junior Hockey League's Elmwood Millionaires.

They ended up against the Fort William Juniors in the finals, beating them 1-0 and tying them 2-2 to win the regional playoffs.

In the Eastern Memorial Cup semi-final, the Thistles again met up with the MJHL's Elmwood Millionaires.

In the summer of 1940, it became apparent that they would not have the numbers or the money to continue competing during World War II and folded.