Drum Corps International (DCI) is a governing body for junior drum and bugle corps based in Indianapolis, Indiana. DCI is responsible for developing and enforcing rules of competition, and for providing standardized adjudication, at sanctioned competitions throughout the United States and Canada.

The competitive season traditionally begins in late June and ends with the annual World Championship the second week of August. The 2020 World Championships were scheduled for August 6 – August 8, 2020, at the Lucas Oil Stadium in Indianapolis, Indiana. In March 2020, DCI announced the upcoming competitive season would be cancelled, in response to the ongoing COVID-19 pandemic. In March 2021, DCI announced the return of drum corps, dubbed the "Celebration Tour", serving as a bridge to DCI's 50th anniversary in 2022. This shorter, non-competitive season concluded with a celebratory event hosted at Lucas Oil Stadium from August 12 – August 14, 2021. The previous Open Class Championships were hosted on August 5 – August 6, 2019, at Indiana Wesleyan University, in Marion, Indiana.

DCI is not affiliated with the similarly named Drum Corps Associates (DCA) or Drum Corps Europe (DCE), governing bodies for all-age or senior drum and bugle corps in the United States and Europe.