The 2004 IIHF World U18 Championships were held in Minsk, Belarus. The championships began on April 8, 2004, and finished on April 18, 2004. Games were played at the Ice Palace and Palace sport in Minsk. Russia defeated the United States 3–2 in the final to claim the gold medal, while the Czech Republic defeated Canada 3–2 to capture the bronze medal.
The 2009 Men's Ice Hockey World Championships was the 73rd such event hosted by the International Ice Hockey Federation. Teams representing 46 countries participated in four levels of competition. The competition also served as qualifications for division placements in the 2010 competition. In the Division I Championship held in April, Kazakhstan and Italy were promoted to the Championship division, while Australia and Romania were demoted to Division II. In the Division II competition, Serbia and South Korea were promoted, North Korea and South Africa were relegated to Division III. In the Division III competition, New Zealand and Turkey were promoted to Division II for 2009.
The 2006 IIHF World Championship Division II was an international Ice hockey tournament run by the International Ice Hockey Federation. The tournament was contested from March 27 to April 9, 2006. Participants in this tournament were separated into two separate tournament groups. The Group A tournament was contested in Sofia, Bulgaria. Group B's games were played in Auckland, New Zealand. Romania and China finished atop of Group A and Group B respectively, gaining promotion to Division I for 2007. While South Africa finished last in Group A and hosts New Zealand last in Group B and were relegated to Division III for 2007.
The 2010 IIHF World Championship Division III was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. The tournaments were contested between 14 and 18 April 2010. For the first time, the IIHF allowed eight teams, rather than six, to compete in Division III, which was handled by separating the teams into two groups. Group A was played in Kockelscheuer, Luxembourg, while Group B's games took place in Yerevan, Armenia. The process reverted to the single group of six teams the following year.
The 2010 IIHF World Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. The tournaments were contested between 10 and 17 April 2010. Participants in this championship were drawn into two separate tournament groups. The Group A tournament was contested in Naucalpan, Mexico. Group B's games were played in Narva, Estonia. Spain and Estonia won Group A and Group B, respectively, to earn promotion to Division I at the 2011 IIHF World Championship. Meanwhile, Turkey and Israel finished last in Group A and B and were relegated to Division III for 2011. These four teams were replaced by Serbia and Croatia, which were relegated from Division I, and Ireland and North Korea which earned promotion from Division III.
The 2010 IIHF World Championship Division I was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. The tournaments were contested between 17 and 25 April 2010. Participants in this championship were drawn into two separate tournament groups. The Group A tournament was contested in Tilburg, Netherlands. Group B's games were played in Ljubljana, Slovenia. Austria won the Group A tournament while Slovenia won the Group B tournament to earn promotion to the Top Division of the 2011 IIHF World Championship. Serbia and Croatia finished last in each group and will be relegated to Division II at the 2011 World Championships. Spain and Estonia earned promotion from the 2010 IIHF World Championship Division II and replaced Serbia and Croatia in Division I in 2011.
The 2012 IIHF U18 World Championship was the 14th IIHF World U18 Championship and was hosted in Brno, Znojmo and Břeclav, Czech Republic. It began on 12 April 2012 with the gold medal game played on 22 April 2012.
The 2013 IIHF World U20 Championship was the 37th edition of the Ice Hockey World Junior Championship (WJC). It was hosted in Ufa, Russia. It began on December 26, 2012, and ended with the gold medal game played on January 5, 2013. The United States defeated defending-champion Sweden 3–1 to win their third title, their first one since 2010. American goalie John Gibson was named MVP of the tournament.
The 2012 IIHF U18 World Championship Division II was two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. In 2012, a new format was introduced to the IIHF World U18 Championships, therefore Division II A and Division II B now represent the fourth and the fifth tier of the IIHF World U18 Championships.
The 2016 World Junior Ice Hockey Championships was the 40th Ice Hockey World Junior Championship. It was hosted in Helsinki, Finland. It began on December 26, 2015, and ended with the gold medal game on January 5, 2016. This marked the sixth time that Finland has hosted the WJC, and the hosts defeated Russia 4–3 in overtime to win their fourth title in history and second in the last three years. Belarus was relegated to Division I-A for 2017 by merit of their tenth-place finish, while Finnish right winger Jesse Puljujärvi earned MVP and top scorer honors.
The 2015 IIHF U18 World Championship was the 17th IIHF World U18 Championship, and was hosted by Zug and Lucerne, Switzerland. The tournament began on 16 April 2015, with the gold medal game played on 26 April 2015.
The 2015 IIHF U18 World Championship Division II was two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. The Division II A and Division II B tournaments represent the fourth and the fifth tier of the IIHF World U18 Championship.
The 2016 IIHF Ice Hockey U20 World Championship Division II were the two international ice hockey tournaments organized by the International Ice Hockey Federation. Division II A was contested in Elektrėnai, Lithuania and Division II B in Novi Sad, Serbia. These tournaments represent the fourth and fifth tiers of the World Junior Ice Hockey Championships.
The 2017 IIHF World Championship Division II was an international ice hockey tournament run by the Zurich, Switzerland-based International Ice Hockey Federation. Group A was contested in Galati, Romania from 3 to 9 April 2017 and Group B in Auckland, New Zealand from 4 to 10 April 2017.
The 2019 IIHF U18 World Championship was the 21st such event hosted by the International Ice Hockey Federation. Teams participated at several levels of competition. The competition also served as qualifications for the 2020 competition. One national team, Luxembourg, returned to play in the World Championships for the first time since playing in the 2000 European qualification tiers.
The 2019 IIHF U18 World Championship Division III was two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. The Division III A and Division III B tournaments represent the sixth and the seventh tier of the IIHF World U18 Championship.
The 2020 IIHF World U18 Championship would have been the 22nd such event hosted by the International Ice Hockey Federation. Teams would have participated at several levels of competition. The competition also would have served as qualifications for the 2021 competition. The division II and III tournaments were cancelled by IIHF on 2 March 2020. The top division and division I tournaments were cancelled by the IIHF on 13 March 2020 due to the COVID-19 pandemic
The 2020 World Junior Ice Hockey Championship Division III was an international ice hockey tournament organized by the International Ice Hockey Federation. It was played in Sofia, Bulgaria, from 13 to 19 January 2020. Eight teams participated in the competition; they were drawn into two preliminary round groups of four: the top two teams from each group played in the semifinals in a four-team bracket for a chance to play for promotion to Division II B, while the bottom two teams in each group played in placement rounds for 5th to 8th place. Iceland won the tournament.
The 2022 IIHF U18 World Championship Division II were two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. The Division II A and Division II B tournaments represent the fourth and the fifth tier of the IIHF World U18 Championship.
The 2023 IIHF U18 World Championship Division II were two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. The Division II A and Division II B tournaments represent the fourth and the fifth tier of the IIHF World U18 Championship.
Serbia 
Bulgaria 
