World Junior Championships
- 18U Baseball World Cup
- AIBA Youth World Boxing Championships
- Artistic Gymnastics Junior World Championships
- BWF World Junior Championships
- Bandy World Championship U-23
- Bandy World Championship Y-19
- FIBA Under-19 World Championship
- FIFA U-20 World Cup
- FINA World Junior Synchronised Swimming Championships
- FINA Youth World Swimming Championships
- FIS Nordic Junior World Ski Championships
- IAAF World Junior Championships in Athletics
- IFSC Climbing World Youth Championships
- IIHF World Junior Championship
- IIHF World U18 Championship
- IIHF World Women's U18 Championships
- IRB Junior World Championship
- ISU World Junior Synchronized Skating Championships
- ITTF World Youth Championships
- Junior World Fencing Championships
- Junior World Golf Championships
- Junior World Orienteering Championships
- Junior World Ski Orienteering Championships
- List of world cups and world championships for juniors and youth
- Men's FIH Hockey Junior World Cup
- Rhythmic Gymnastics Junior World Championships
- Women's FIH Hockey Junior World Cup
- World Judo Juniors Championships
- World Junior Alpine Skiing Championships
- World Junior Chess Championship
- World Junior Curling Championships
- World Junior Figure Skating Championships
- World Junior Lacrosse Championship
- World Junior Pairs Championship
- World Junior Short Track Speed Skating Championships
- World Junior Speed Skating Championships
- World Junior Squash Championships
- World Junior Teams Championship
- World Junior Wrestling Championships
- World Rowing Junior Championships
- World Youth Chess Championship
- World Youth Netball Championships
- Youth Bandy World Championship