The following nations qualified to participate in the 2021 World Mixed Doubles Curling Championship: Pursuant to a December 2020 ruling by the
Court of Arbitration for Sport due to the
Russian doping scandal, Russia is prohibited from competing under its flag or any national symbols at any Olympic Games or world championships through 16 December 2022, and therefore the Russian team is competing neutrally representing the Russian Curling Federation (RCF).
World Ranking The World Curling Federation World Ranking tracks and lists the success of all Member Associations. ==Teams==