The 2021 IIHF World Championship Division I was scheduled to be an international ice hockey tournament run by the International Ice Hockey Federation.

The Group A tournament would have been held in Ljubljana, Slovenia from 9 to 15 May and the Group B tournament in Katowice, Poland from 26 April to 2 May 2021.

On 18 November 2020, both tournaments were cancelled due to the COVID-19 pandemic.

Group A tournament

Participants

TeamQualification
FrancePlaced 15th in the Elite Division in 2019 and was relegated.
AustriaPlaced 16th in the Elite Division in 2019 and was relegated.
South KoreaPlaced 3rd in Division I A in 2019.
SloveniaHost, placed 4th in Division I A in 2019.
HungaryPlaced 5th in Division I A in 2019.
RomaniaPlaced 1st in Division I B in 2019 and was promoted.

Standings

PosTeamPldWOTWOTLLGFGAGDPtsQualification or relegation
1France0000000002022 IIHF World Championship
2Austria000000000
3South Korea000000000
4Slovenia (H)000000000
5Hungary000000000
6Romania000000000Relegation to 2022 Division I B

Group B tournament

Participants

TeamQualification
LithuaniaPlaced 6th in Division I A in 2019 and was relegated.
PolandHost, placed 2nd in Division I B in 2019.
JapanPlaced 3rd in Division I B in 2019.
EstoniaPlaced 4th in Division I B in 2019.
UkrainePlaced 5th in Division I B in 2019.
SerbiaPlaced 1st in Division II A in 2019 and was promoted.

Standings

PosTeamPldWOTWOTLLGFGAGDPtsQualification or relegation
1Lithuania000000000Promotion to 2022 Division I A
2Poland (H)000000000
3Japan000000000
4Estonia000000000
5Ukraine000000000
6Serbia000000000Relegation to 2022 Division II A