Which organization runs the Home Run Derby?

Major League Baseball runs the Home Run Derby. The competition is an official MLB event held as part of All-Star Week, alongside the All-Star Game and other league-sponsored activities.

The Derby gives selected major-league hitters a chance to compete in a home-run contest rather than a traditional baseball game. Players are placed into a tournament-style field and advance through rounds by hitting more home runs than their opponents under the rules in effect that year.

The event was introduced in 1985 and has been organized around MLB's All-Star festivities ever since. Its format has changed repeatedly: earlier editions used timed outs, while later versions introduced bracket rounds, pitch limits, and bonus opportunities. These changes are set by MLB and can vary from season to season.

The National Baseball Hall of Fame preserves baseball history but does not operate the Derby. The World Baseball Classic is an international tournament, and Minor League Baseball governs a different level of professional competition. Those organizations are therefore not the answer to this question.