The 2025 IIHF World Championship Division I consisted of two international ice hockey tournaments organized by the International Ice Hockey Federation. Divisions I A and I B represent the second and the third tier of the IIHF Ice Hockey World Championships.
In Group A, Great Britain and Italy gained promotion to the Top Division and Romania was relegated. Lithuania won Group B and got promoted, while Croatia was relegated to Division II.
The Division I Group A tournament was played in Sfântu Gheorghe, Romania from 27 April to 3 May 2025.
Seven referees and seven linesmen were selected for the tournament.
<section begin=A /><section end=A />
All times are local (UTC+3)
List shows the top skaters sorted by points, then goals.
<small>GP = Games played; G = Goals; A = Assists; Pts = Points; +/â = Plus/Minus; PIM = Penalties in Minutes; POS = Position<br /> Source: IIHF.com</small>
Only the top five goaltenders, based on save percentage, who have played at least 40% of their team's minutes, are included in this list.
<small>TOI = time on ice (minutes:seconds); SA = shots against; GA = goals against; GAA = goals against average; Sv% = save percentage; SO = shutouts<br /> Source: IIHF.com</small>
The Division I Group B tournament was played in Tallinn, Estonia from 26 April to 2 May 2025.
Seven referees and seven linesmen were selected for the tournament.
<section begin=B /><section end=B />
All times are local (UTC+3)
List shows the top skaters sorted by points, then goals.
<small>GP = Games played; G = Goals; A = Assists; Pts = Points; +/â = Plus/Minus; PIM = Penalties in Minutes; POS = Position<br /> Source: IIHF.com</small>
Only the top five goaltenders, based on save percentage, who have played at least 40% of their team's minutes, are included in this list.
<small>TOI = time on ice (minutes:seconds); SA = shots against; GA = goals against; GAA = goals against average; Sv% = save percentage; SO = shutouts<br /> Source: IIHF.com</small>