The 2025 World Junior Ice Hockey Championship Division I consists of two international under-20 ice hockey tournaments organized by the International Ice Hockey Federation. Division I A is the second tier and Division I B is the third tier of the IIHF World Junior Championship. For each tier's tournament, the first-placed team will be promoted to the next higher division, while the bottom-placed team will be relegated to a lower division.
To be eligible as a junior player in these tournaments, a player can't be born earlier than 2005.
Source: IIHF Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) head-to-head number of goals scored; 5) result against closest best-ranked team outside tied teams; 6) result against second-best-ranked team outside tied teams; 7) seeding before tournament. (H) Host
First match(es) will be played: 11 January 2025. Source: IIHF Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) head-to-head number of goals scored; 5) result against closest best-ranked team outside tied teams; 6) result against second-best-ranked team outside tied teams; 7) seeding before tournament. (H) Host
