Denmark (DEN)
Contestants: Andreas Arnfred Nielsen, Holger Endel Rønn, Igor Tomasz Michalec, Maia Reffs Vistisen, Theodor Boaz Pedersen.
Team leader: Magnus Christian Ring Merrild.
Deputy leader: Malte Kildelund Rosenkilde.
Estonia (EST)
Contestants: Ervin Ivanov, Aleksei Jemeljanov, Vahur Paist, Bronislav Shatil, Kirill Tselovalnikov.
Team leader: Oleg Košik.
Deputy leader: Hendrik Vija.
Finland (FIN)
Contestants: Zhiyuan Liu, Aino Aulanko, Zhongyi Li, Artúr Nádor, Siiri Roschier.
Team leader: Lauri Hallila.
Deputy leader: Daniel Slivinskiy.
Germany (GER)
Contestants: Dmitrii Galatenko, Ben Fischer, Tammo Mintken, Johannes Raitz von Frentz, Johannes Walcher.
Team leader: Michael Dreher.
Deputy leader: Christian Bernert.
Iceland (ICE)
Contestants: Hrafnkell Hvanndal Halldórsson,
Merkúr Máni Hermannsson, Ragna María Sverrirsdóttir, Víkingur Þorri Sigurðsson, Valur Einar Georgsson.
Team leader: Viktor Már Guðmundsson.
Deputy leader: Atli Fannar Franklín.
Latvia (LAT)
Contestants: Ansis Gustavs Andersons, Kristaps Lāss, Chuhan Li, Adriāns Piliksers, Ramona Poreitere.
Team leader: Māris Valdats.
Deputy leader: Ilmārs Štolcers.
Lithuania (LIT)
Contestants: Paulius Aleknavičius, Jurgis Kemeklis, Jokūbas Jasiūnas, Kiryl Krutsko, Laurynas Truskauskas.
Team leader: Greta Morkūnė.
Deputy leader: Benas Budvytis.
Observer: Aivaras Novikas.
Norway (NOR)
Contestants: David Strømme Eikeland, Justin Jia, Emil Guntvedt, Ivar Fevang, Vebjørn Holm-Gjerde.
Team leader: Dávid Kunszenti-Kovács.
Deputy leader: Andreas Notøy.
Observer: Maxim Scherbakov.
Poland (POL)
Contestants: Filip Manijak, Kajetan Ramsza, Jan Kwieciński, Szymon Tobiasz, Jeremi Hyska.
Team leader: Dominik Bysiewicz.
Deputy leader: Łukasz Orski.
Sweden (SWE)
Contestants: Erik Hedin, John Hedin, Olle Rehnquist, Ruiming Zhang, Mingdao Zou Zhong.
Team leader: Hugo Eberhard.
Deputy leader: Kevin Haagensen Strömberg.