| Most recent season or competition: 2024 IIHF World U18 Championships | |
 | |
| Sport | Ice hockey |
|---|---|
| First season | 1999 |
| No. of teams | 10 |
| Most recent champion(s) |  Canada (5th title) |
| Most titles |  United States (11 titles) |
| Relegation to | Division I |
| Official website | IIHF.com |
The IIHF U18 World Championship is an annual event organized by the International Ice Hockey Federation for national under-18 ice hockey teams from around the world. The tournament is usually played in April and is organized according to a system similar to the Ice Hockey World Championships and the IIHF World Junior Championship. The tournament was first held in 1999.