The Canadian Olympic Committee is the first to confirm it won't send any athletes to the Games.
Australia and New Zealand already boycotted or would boycott the Olympic Games in near future.
Canada is the first country to officially boycott the 2020 Tokyo Olympic Games, amid the COVID-19 outbreak.
Meanwhile, the Australian Olympic Committee (AOC) has warned its athletes to prepare for a Tokyo Olympics in the northern summer of 2021.
The AOC says an Australian team can't be assembled for the Tokyo Games, which is scheduled to start in July 24.
NZ Olympic Committee president Mike Stanley confirmed it would seriously consider boycotting the Tokyo Games, if the International Olympic Committee decided not to postpone.