Drum Corps International (DCI) is a governing body for drum and bugle corps. Founded in 1971 and known as "marching music's major league," DCI develops and enforces rules of competition and judges at sanctioned drum and bugle corps competitions throughout the United States and Canada. It is headquartered in Indianapolis, Indiana. In 2023, Drum Corps Associates (DCA) and DCI joined in at least a two-year partnership to jointly govern the drum and bugle corps activity in North America.