| Country |
Contestants |
Leader, deputy leader, observer |
| Denmark |
Alex Villaro Krüger
Iustin Beldie
Jingdan Hua
Magnus Ring Merrild
Marius Fischer |
Frederik Ravn Klausen
Alexander Christgau |
| Estonia |
Hendrik Vija
Karl Paul Parmakson
Kati Iher
Richard Luhtaru
Toomas Tennisberg |
Oleg Koshik
Sandra Schumann |
| Finland |
Akseli Jussinmäki
Hermanni Huhtamäki
Joonatan Honkamaa
Nerissa Shakespeare
Olli Järviniemi |
Anne-Maria Ernvall-Hytönen
Esa Vesalainen |
| Germany |
Alexander Thiel
Christoph Börger
Jonas Walter
Kerrin Bielser
Male Hesse |
Uwe Leck
Christian Bernert
Hinrich Lorenzen |
| Iceland |
Ari Páll Agnarsson
Breki Pálsson
Elvar Wang Atlason
Hrólfur Eyjólfsson
Tómas Ingi Hrólfsson |
Marteinn Þór Harðarson
Bjarnheiður Kristinsdóttir |
| Latvia |
Agnese Upite
Artem Ubaidullaev
Estere Sverna
Eriks Vilunas
Maksims Pogumirskis |
Maris Valdats
Ilze Osina |
| Lithuania |
Dominykas Marma
Ernestas Ramanauskas
Justas Janickas
Neringa Levinskaite
Tautvydas Jasiunas |
Romualdas Kasuba
Benas Budvytis
Aivaras Novikas |
| Norway |
Amund Skretting Bergset
Andreas Alberg
Anna Lyubarskaja
Bjørnar Gullikstad Hem
Ole Marius Strøhm |
Dávid Kunszenti-Kovács
Pål Hermunn Johansen |
| Poland |
Antoni Zewierzejew
Jadwiga Czyzewska
Piotr Kowalewski
Radoslaw Zak
Stanislaw Strzelecki |
Wojciech Nadara
Beata Bogdanska |
| St. Petersburg |
Aleksandr Ognev
Dmitrii Zhavoronkov
Egor Kravchenko
Evgenii Kuptsov
Ivan Lialinov |
Konstantin Kokhas
Dmitrii Rostovskii
Maksim Pratusevich |
| Sweden |
Arvid Lunnemark
David Avellan-Hultman
Hugo Eberhard
Louise Westin
Marko Proloscic |
Qimh Xantcha |