The Japan national under-18 baseball team is the national under-18 team representing Japan in international baseball competitions. The organization is currently ranked 1st in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup. They have finished 2nd in the tournament four times.
The Cuba national under-18 baseball team is the national under-18 team representing Cuba in international baseball competitions. The organization is currently ranked 9th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup. They have won the tournament a leading 11 times.
The Chinese Taipei national under-18 baseball team is the national under-18 team representing Chinese Taipei in international baseball competitions. The organization is currently ranked 2nd in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup. They have won the tournament three times.
The Canada national under-18 baseball team is the national under-18 team representing Canada in international baseball competitions. The organization is currently ranked 12th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup. They have won the tournament once.
The Australia national under-18 baseball team is the national under-18 team representing Australia in international baseball competitions. The organization is currently ranked 10th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup. They have finished 2nd once and 3rd four times in the tournament.
The Mexico national under-18 baseball team is the national under-18 team representing Mexico in international baseball competitions. The organization is currently ranked 4th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Netherlands national under-18 baseball team is the national under-18 team representing the Netherlands in international baseball competitions. The organization is currently ranked 8th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Russia national under-18 baseball team is the national under-18 team representing Russia in international baseball competitions. The organization is currently ranked 28th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup. In reaction to the 2022 Russian invasion of Ukraine, WBSC Europe relocated competitions that had been scheduled to be held in Russia during 2022, and excluded Russian teams from all its competitions for both national and club teams to be held in Europe in 2022.
The Italy national under-18 baseball team is the national under-18 team representing Italy in international baseball competitions. The organization is currently ranked 17th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Czech Republic national under-18 baseball team is the national under-18 team representing the Czech Republic in international baseball competitions. The organization is currently ranked 14th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The France national under-18 baseball team is the national under-18 team representing France in international baseball competitions. The organization is currently ranked 22nd in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Venezuela national under-18 baseball team is the national under-18 team representing Venezuela in international baseball competitions. The organization is currently ranked 6th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Colombia national under-18 baseball team is the national under-18 team representing Colombia in international baseball competitions. The organization is currently ranked 11th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The South Africa national under-18 baseball team is the national under-18 team representing South Africa in international baseball competitions. The organization is currently ranked 26th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The China national under-18 baseball team is the national under-18 team representing China in international baseball competitions. The organization is currently ranked 21st in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Spain national under-18 baseball team is the national under-18 team representing Spain in international baseball competitions. The organization is currently ranked 19th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Thailand national under-18 baseball team is the national under-18 team representing Thailand in international baseball competitions. The organization is currently ranked 50th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Philippines national under-18 baseball team is the national under-18 team representing the Philippines in international baseball competitions. The organization is currently ranked 36th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Germany national under-18 baseball team is the national under-18 team representing Germany in international baseball competitions. The organization is currently ranked 18th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
The Slovakia national under-18 baseball team is the national under-18 team representing Slovakia in international baseball competitions. The organization is currently ranked 35th in the world by the World Baseball Softball Confederation. They compete in the bi-annual U-18 Baseball World Cup.
South Korea 
(18 December 2023) [1] 