2023 IIHF World U18 Championship Division I

The 2023 IIHF U18 World Championship Division I were two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation. The Division I A and Division I B tournaments represent the second and the third tier of the IIHF World U18 Championship.
In the 'B' tournament Austria clinched the championship (and promotion) on the final day with a victory over South Korea before the hosts game against Italy. Their only loss was Poland's only win despite high hopes of an improved roster with a new coach, but were relegated.
==Division I A==
The Division I A tournament was being played in Angers, France, from 23 to 29 April 2023.2023 Div I A official website2023 Div I A statistics, stats.iihf.com2023 Div I A statistics, globalsportsarchive.com
===Participants===
Team	Qualification
 	Hosts, placed 3rd in 2022 Division I A
 	Placed 4th in 2022 Division I A
 	Placed 5th in 2022 Division I A
 	Placed 6th in 2022 Division I A
 	Placed 1st in 2022 Division I B and were promoted
 	Placed 2nd in 2022 Division I B and were promoted
===Standings===
===Results===
All times are local (UTC+2).
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==Division I B==
The Division I B tournament was played in Bled, Slovenia, from 10 to 16 April 2023.2023 Div I B official website2023 Div I B statistics, stats.iihf.com2023 Div I B statistics, globalsportsarchive.com
===Participants===
Team	Qualification
 	Placed 3rd in 2022 Division I B
 	Hosts, placed 4th in 2022 Division I B
 	Placed 5th in 2022 Division I B
 	Placed 6th in 2022 Division I B
 	Placed 1st in 2022 Division II A and were promoted
 	Placed 2nd in 2022 Division II A and were promoted
===Standings===
===Results===
All times are local (UTC+2).
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==References==
Category:IIHF World U18 Championship Division I
Category:2023 IIHF World U18 Championships
Category:2022–23 in European ice hockey