The 2009 World Junior Ice Hockey Championships, was the 33rd edition of the Ice Hockey World Junior Championship and was played in Ottawa, Ontario, Canada, between December 26, 2008 and January 5, 2009. Games were held at the Ottawa Civic Centre and Scotiabank Place. The tournament set a record for WJC attendance at 453,282. Canada won the gold medal for a record-tying fifth consecutive time. No country would win back-to-back gold until the 2023 World Junior Ice Hockey Championships when Canada won the 2022 and 2023 tournaments respectively.
The 2009 World Junior Ice Hockey Championship Division I was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Division I represents the second level of the 2009 World Junior Ice Hockey Championships. The winners of each group were promoted to the Top Division for the 2010 IIHF World U20 Championship, while the last-placed teams in each group were relegated to the 2010 Division II.
The 2009 World Junior Ice Hockey Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Division II represents the third level of the 2009 World Junior Ice Hockey Championships. 12 participating teams were divided into two groups, with Group A playing in Romania, and Group B playing in Spain. The winner of each group was promoted to Division I for the 2010 IIHF World Junior Championship, while the last-placed teams in each group were saved from relegation to Division III for the 2010 IIHF World Junior Championship due to 2009's Division III tournament being cancelled.
The 2011 IIHF World U20 Championship, commonly referred to as the 2011 World Junior Hockey Championships, was the 35th edition of the Ice Hockey World Junior Championship and was hosted by the United States. The games were played in Western New York, at HSBC Arena in Buffalo and Niagara University's Dwyer Arena in Lewiston. Russia won the gold medal with a 5–3 victory over Canada in the championship game, after completing the biggest comeback in the WJHC history; being down 3–0 after two periods, the Russians scored five goals in the third period to capture their first WJHC gold medal since 2003. The host team, the United States, won the bronze medal with a 4–2 win over Sweden.
The 2011 World Junior Ice Hockey Championship Division I was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Six teams played in each of the two groups. In addition to the usual promotion and relegation, the format changed from two parallel tournaments, to two tiered tournaments. This means that the teams who finished 2nd and 3rd will be grouped together with the two relegated teams from the top division, and the teams who finished 4th and 5th will be grouped with the two promoted teams from Division II.
The 2012 World Junior Ice Hockey Championship Division I was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. In 2012, a new format was introduced to the IIHF World Junior Championships, therefore Division I A and Division I B now represent the second and third tiers of the IIHF World Junior Championship. Division I was played in two groups of six teams each. In each group, the first-placed team was promoted to a higher level, while the last-placed team was relegated to a lower level. This year, for the first time, the winner of Group B was promoted to Group A and the winner of Group A was promoted to the next year's Top Division. Previously, the winners of both groups were promoted to the Top Division.
The 2012 World Junior Ice Hockey Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. In 2012, a new format was introduced to the IIHF World Junior Championships, therefore Division II A and Division II B now represent the fourth and fifth tier of the IIHF World Junior Championship. Division II was played in two groups of six teams each. In each group, the first-placed team is promoted to a higher level, while the last-placed team is relegated to a lower level. This year, for the first time, the winner of Group B is promoted to Group A and the winner of Group A is promoted to the next year's Division I. Previously, the winners of both groups were promoted to the Division I.
The 2015 World Junior Ice Hockey Championships was the 39th edition of Ice Hockey World Junior Championship, played from December 26, 2014 to January 5, 2015. It was co-hosted by Toronto, Ontario, and Montreal, Quebec, Canada, and organized by Hockey Canada, Hockey Quebec, the Ontario Hockey Federation, the Montreal Canadiens, Maple Leafs Sports and Entertainment and Evenko. Games were split between Air Canada Centre in Toronto and Bell Centre in Montreal, with Montreal hosting Group A matches and two quarter finals, and Toronto hosting Group B, along with the relegation games, two quarter finals, along with the semi-finals, bronze medal, and gold medal games.
The 2013 World Junior Ice Hockey Championship Division I was a pair of international under-20 ice hockey tournaments organized by the International Ice Hockey Federation. In each of the two groups, six teams played a round-robin tournament; the first-placed team was promoted to a higher level, while the last-placed team was relegated to a lower level. Divisions I A and I B represent the second and third tier of the World Junior Ice Hockey Championships.
The 2013 World Junior Ice Hockey Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Each of the two groups consisted of six teams; the first-placed teams were promoted to a higher level, while the last-placed teams were relegated to a lower level. Divisions II A and II B represent the fourth and the fifth tier of the World Junior Ice Hockey Championships.
The 2014 World Junior Ice Hockey Championship Division I was a pair of international under-20 ice hockey tournaments organized by the International Ice Hockey Federation. In each of the two groups, six teams played a round-robin tournament; the first-placed team was promoted to a higher level, while the last-placed team was relegated to a lower level. Divisions I A and I B represent the second and third tier of the World Junior Ice Hockey Championships.
The 2014 World Junior Ice Hockey Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Each of the two groups consisted of six teams; the first-placed teams were promoted to a higher level, while the last-placed teams were relegated to a lower level. Divisions II A and II B represent the fourth and the fifth tier of the World Junior Ice Hockey 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 Ice Hockey U20 World Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Division II A was contested in Tallinn, Estonia and Division II B in Jaca, Spain. These tournaments represent the fourth and fifth tiers of the World Junior Ice Hockey Championships.
The 2010 World Junior Ice Hockey Championship Division I was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. Division I represents the second level of the 2010 World Junior Ice Hockey Championships. The winners of each group were promoted to the Top Division for the 2011 IIHF World U20 Championship, while the last-placed teams in each group were relegated to the 2011 Division II.
The 2016 World Junior Ice Hockey Championship Division I was a pair of international under-20 ice hockey tournaments organized by the International Ice Hockey Federation. In each of the two groups, the participating teams played a round-robin tournament; the first-placed team was promoted to a higher level, while the last-placed team was relegated to a lower level. Divisions I A and I B represent the second and third tier of the World Junior Ice Hockey Championships. To be eligible as a "junior" a player couldn't be born earlier than 1996.
The 2019 World Junior Ice Hockey Championship Division II consisted of two tiered groups of six teams each: the fourth-tier Division II A and the fifth-tier Division II B. For each tier's tournament, the first-placed team was promoted to a higher division, while the last-placed team was relegated to a lower division.
The 2020 World Junior Ice Hockey Championship Division II consisted of two tiered groups of six teams each: the fourth-tier Division II A and the fifth-tier Division II B. For each tier's tournament, the first-placed team was promoted to a higher division, while the last-placed team was relegated to a lower division.
The 2022 World Junior Ice Hockey Championship Division II consisted of two tiered groups of six teams each: the fourth-tier Division II A and the fifth-tier Division II B. Due to the exclusion of Russia and Belarus, the following changes in promotions and relegations were made: The top two teams were promoted to a higher division and no team was relegated to a lower division.
The 2023 World Junior Ice Hockey Championship Division II was a pair of international ice hockey tournaments organized by the International Ice Hockey Federation. It consisted of two tiered groups of six teams each: the fourth-tier Division II A and the fifth-tier Division II B. For each tier's tournament, the first-placed team was promoted to a higher division, while the last-placed team was relegated to a lower division.
Estonia 
Romania 
