At EuPhO 2022 there will be 38 participating teams from 37 countries with 182 students. Slovenia as a host country will participate with two teams. Other countries are: Austria, Azerbaijan, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, Colombia, Croatia, Czech Republic, Estonia, Finland, Georgia, Germany, Hungary, Iceland, Italy, Kosovo, Latvia, Lithuania, Luxembourg, Macedonia, Mexico, Moldova, Norway, Poland, Portugal, Romania, Saudi Arabia, Serbia, Slovakia, Sweden, Switzerland, Taiwan, Tajikistan, Turkey and Vietnam.