The 2023 IHF Men's U19 Handball World Championship was the 10th edition of the IHF Men's U19 Handball World Championship, held from 2 to 13 August 2023 in Croatia under the aegis of International Handball Federation (IHF).

It was the first time in history that the championship is organised by the Croatian Handball Federation.

[1] Spain won their first title after defeating Denmark in the final.

The tournament was awarded to Croatia by IHF Council in its meeting held in Cairo, Egypt on 28 February 2020.

Burundi withdrew their team before the placement round as some players were unable to be found.