BWF World Junior Championships

The BWF World Junior Championships (also known as the World Junior Badminton Championships) is a tournament organized by the Badminton World Federation (BWF) to crown the best junior badminton players (under-19) in the world.

The mixed team event, Suhandinata Cup, only in competition since 2000.

List of players who have won BWF World Junior Championships and later won the BWF World Championships to become both the WJC & WC Champion.

Below is the list of the most ever successful players in the BWF World Junior Championships, with 3 or more gold medals.

BS: Boys' singles; GS: Girls' singles; BD: Boys' doubles; GD: Girls' doubles; XD: Mixed doubles; XT: Mixed team;

Below is the gold medalists shown based by category and countries after the 2014 Championships. China has been the most successful in the World Junior Championships ever since its inception in 1992. They were the only country ever to achieve a shutout of the medals which they did in 2000.

BOLD means overall winner of that World Junior Championships

...
Wikipedia