The 2024 IIHF U18 World Championship Division I is two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation.

The Divisions I A and I B represent the second and the third tier of the IIHF World U18 Championship.

The Division I Group A tournament was played in Frederikshavn, Denmark, from 14 to 20 April 2024.

(Central European Summer Time – UTC+2) The Division I Group B tournament was played in Tallinn, Estonia, from 14 to 20 April 2024.

(Eastern European Summer Time – UTC+3)