The Karuizawa International Curling Championships is a curling bonspiel held annually since the Olympic Games in Nagano at the SCAP Karuizawa Arena in Kariuzawa, Japan.

[1] The event was part of the World Curling Tour from 2014 to 2019.

The teams play a two-pool round robin tournament with games of eight ends, and the top two teams in each pool advancing to the playoff round.

Five teams of each gender were chosen from foreign nations based on performances at the most recent World Curling Championships, while three teams were chosen from within Japan.

The teams were chosen as follows: The eight teams of each gender played a round robin tournament with games of eight ends, and the top four teams of each gender played ten-end games in the final round.