Below are the rosters for teams competing in the 2025 World Junior Ice Hockey Championships.
Canada Dave Cameron [1] [2] 
Finland Lauri Mikkola [3] 
Germany Tobias Abstreiter [4] 
Latvia Artis Ābols [5] 
United States David Carle [6] 
Czechia Patrik Augusta [7] 
Kazakhstan Sergei Starygin [8] 
Slovakia Ivan Fenes [9] 
Sweden Magnus Hävelid [10] 
Switzerland Marcel Jenni [11] | Pos. | No. | Player | Club Team | League | NHL Rights |
|---|---|---|---|---|---|
| G | 1 | Christian Kirsch | Janesville Jets | NAHL | San Jose Sharks |
| G | 29 | Ewan Huet | Regina Pats | WHL | |
| G | 30 | Elijah Neuenschwander | Fribourg-Gottéron | NL | |
| D | 7 | Timo Bünzli | ZSC Lions | NL | |
| D | 9 | Nic Balestra | EV Zug | NL | |
| D | 14 | Nils Rhyn | EHC Basel | SL | |
| D | 16 | Aris Häfliger | GDT Bellinzona Snakes | SL | |
| D | 21 | Ludvig Johnson | EV Zug | NL | |
| D | 23 | Leon Muggli | EV Zug | NL | Washington Capitals |
| D | 25 | Basile Sansonnens | Rimouski Océanic | QMJHL | Vancouver Canucks |
| D | 26 | Eric Schneller | Genève-Servette HC | NL | |
| D | 28 | Daniil Ustinkov | GCK Lions | SL | |
| F | 3 | Jonah Neuenschwander | EHC Biel-Bienne | NL | |
| F | 5 | Leo Braillard | Lethbridge Hurricanes | WHL | |
| F | 6 | Jamiro Reber | HV71 | SHL | |
| F | 8 | Rico Gredig | HC Davos | NL | New York Rangers |
| F | 10 | Jan Dorthe | HC Fribourg-Gottéron | NL | |
| F | 11 | Rafael Meier | EHC Kloten | NL | |
| F | 12 | Kimo Gruber | GCK Lions | SL | |
| F | 15 | Lars Steiner | Rouyn-Noranda Huskies | QMJHL | |
| F | 17 | Loris Wey | EV Zug | NL | |
| F | 18 | Robin Nico Antenen | EV Zug | NL | |
| F | 19 | Endo Meier | GCK Lions | SL | |
| F | 22 | Andro Kaderli | Leksands IF | SHL | |
| F | 24 | Alain Graf | SC Bern | NL | |
| F | 27 | Simon Meier | Penticton Vees | BCHL |
The Belarusian men's national ice hockey team is the national ice hockey team that represents Belarus. The team is controlled by the Belarusian Ice Hockey Association. Belarus was ranked 14th in the world by the IIHF as of the 2021 World Ranking.
The Danish national men's ice hockey team is the national ice hockey team for Denmark. The team is controlled by Danmarks Ishockey Union. It was founded in 1949, and as of 2022, the Danish team was ranked 10th in the IIHF World Rankings. Denmark currently has 4,255 players. Their coach is Swedish Mikael Gath. Denmark once held the record for the largest loss when they were defeated by Canada in 1949, 47–0, only being surpassed by New Zealand who were defeated by Australia 58–0 in 1987.
The Japanese women's national ice hockey team represents Japan at the International Ice Hockey Federation's Women's World Championships, the Winter Olympics, and at other international ice hockey tournaments. The women's national team is governed by the Japan Ice Hockey Federation. Japan had 2,587 registered female players in 2017 and 1,439 as of 2020.
The International Ice Hockey Federation is a worldwide governing body for ice hockey. It is based in Zurich, Switzerland, and has 84 member countries.
The Czech Republic women's national under-18 ice hockey team is the national women's junior ice hockey team of the Czech Republic, which represents Czechia at the International Ice Hockey Federation's U18 Women's World Championship and other international U18 competitions.
The Finnish women's national under-18 ice hockey team is the national women's junior ice hockey team of Finland, which represents Finland at the International Ice Hockey Federation's Ice Hockey U18 Women's World Championship and other international U18 tournaments. The team is officially nicknamed the Tyttöleijonat and the nickname is regularly used in Finnish-language media.
The Swedish women's national under-18 ice hockey team is the national women's junior ice hockey team of Sweden. The team represents Sweden at the International Ice Hockey Federation's Ice Hockey U18 Women's World Championship and other international ice hockey tournaments and events.
The Japanese women's national under 18 ice hockey team is the national under-18 ice hockey team of Japan. It is organized by the Japan Ice Hockey Federation. The team represents Japan at the International Ice Hockey Federation's U18 Women's World Championship and other international tournaments and events.
The Slovak women's national under 18 ice hockey team is the national under-18 ice hockey team of Slovakia. The team represents Slovakia at the International Ice Hockey Federation's Ice Hockey U18 Women's World Championship.
The Swiss women's national under-18 ice hockey team is one of two national under-18 ice hockey teams of Switzerland. The team is organized by the Swiss Ice Hockey Federation (SIHF) and represents Switzerland at the International Ice Hockey Federation's U18 Women's World Championship and other international tournaments and events.
The United States women's national under-18 ice hockey team represents the United States at the IIHF World Women's U18 Championships.
The Hungarian women's national under 18 ice hockey team is the national under-18 ice hockey team in Hungary. The team represents Hungary at the International Ice Hockey Federation's IIHF U18 Women's World Championship and other international under-18 tournaments and events.
Anna Emily Nix is a German ice hockey player and member of the German national team. She is signed with SDE Hockey in the Swedish Women's Hockey League (SDHL) through the 2025–26 season.
Below are the rosters for teams competing in the 2021 World Junior Ice Hockey Championships. Player NHL rights are accurate as of the tournament.
Each team's roster comprised a minimum of fifteen skaters and two goaltenders, and "due to the special situation with the COVID-19 pandemic and safety rules including no players being allowed to join late, the roster size for the tournament was exceptionally increased [from the standard 23] to 25 players." All ten participating nations, through the confirmation of their respective national associations, were required to submit a "Long List" roster no later than two weeks before the start of the tournament. Final rosters were submitted on 20 August 2021, one day before the tournament begins, but as no players can be added after arriving in Canada, rosters were effectively set when teams landed in Calgary on 11 August 2021.
Below are the rosters for teams competed in the original attempt 2022 World Junior Ice Hockey Championships. The IIHF allowed rosters to be changed, and overage players were grandfathered for the rescheduled tournament in August 2022.
The Thailand men's national junior ice hockey team is the men's national under-20 ice hockey team of Thailand. The team is controlled by the Ice Hockey Association of Thailand, a member of the International Ice Hockey Federation. The team made its international debut in December 2018 at the 2019 IIHF U20 Challenge Cup of Asia Division I tournament which it went on to win.
The South Korea women's national under-18 ice hockey team is the women's national under-18 ice hockey team of South Korea. The team is controlled by the Korea Ice Hockey Association, a member of the International Ice Hockey Federation. The team made its international debut in January 2019 and currently play in Division I Group B of the IIHF World Women's U18 Championships.
Each team's roster consisted of at least 15 skaters and two goaltenders, and at most 20 skaters and three goaltenders. All ten participating nations, through the confirmation of their respective national associations, had to submit a roster by the first IIHF directorate.
Below are the rosters for teams competing in the 2023 World Junior Ice Hockey Championships.
