The U-23 Baseball World Cup is a biennial, professional-level, National Team, baseball world championship of the World Baseball Softball Confederation (WBSC), replacing Baseball World Cup.

The inaugural tournament was held in November 2014, in Taichung, Taiwan, as the 21U Baseball World Cup, with each team made of 21-year-old and younger players but allowed for six players to be 23-year-old and younger. Starting with the 2016 edition—in Monterrey, Mexico—the tournament has been expanded to permit nations to select players up to 23 years old for their entire rosters. Players must also possess valid passports of the nations they are representing, in line with Olympic standards. The U-23 Baseball World Cup is the third-most-important international baseball tournament in terms of distribution of world ranking points, following the Premier12 and the World Baseball Classic.

The rosters of national teams that participated in the tournament included professional players from clubs affiliated to the Australian Baseball League, Chinese Professional Baseball League, Korea Baseball Organization, Major League Baseball, Mexican Baseball League, Nicaraguan Professional Baseball League, and Nippon Professional Baseball.

The World Cup U23 baseball tournament is an exhilarating and highly anticipated event that showcases the immense talent and skill of young baseball players from around the globe. As the name suggests, this tournament is exclusively for players under the age of 23, providing a platform for the rising stars of the sport to shine on an international stage.

The tournament brings together teams from various countries, each representing their nation with pride and determination. With a format similar to the prestigious FIFA World Cup, the World Cup U23 features intense competition, fierce rivalries, and unforgettable moments that captivate fans worldwide.

The participating teams battle it out in a series of thrilling matches, showcasing their exceptional athleticism, strategic gameplay, and unwavering team spirit. From powerful home runs to lightning-fast pitches, every aspect of the game is on display, leaving spectators on the edge of their seats.

The World Cup U23 not only serves as a platform for young players to showcase their skills but also acts as a stepping stone towards professional baseball careers. Scouts and talent agents from major leagues closely follow the tournament, seeking to identify the next generation of baseball superstars.

The tournament is not just about the competition; it also fosters cultural exchange and camaraderie among nations. Players and fans from different backgrounds come together, sharing their love for the game and creating lasting memories.

The World Cup U23 is a celebration of the future of baseball, where the world's most promising young talents come together to compete, inspire, and leave a lasting impact on the sport. It is a must-watch event for baseball enthusiasts, offering a glimpse into the future of the game and the potential stars that will shape its legacy.