The Team Speedway Under-21 World Championship is a speedway competition to determine the World Championship for national Under-21 teams (the sport's equivalent of the Under-21 World Cup in football).

The first edition of the competition was in 2005 prior to its incorporation with the Speedway of Nations.

[1][2][3] Poland has dominated the competition winning the title record 17 times.

The 4 competing teams shall each consist of 5 riders; there shall be no substitute rider: When a team is 6 or more points in arrears of the leading team, the team manager may substitute a rider in the next or succeeding heats with another rider in his team, However, each rider may be used as a substitute once only.

Substitutions must stop when the team is less than 6 points in arrears.