Ringleader

A ringleader is a leader of a group of people, especially one involved in illicit activities.

Ringleader may also refer to:
 * Ringmaster (circus), The leader of a circus performance.
 * Ringleader (comics), a fictional character in the Marvel Universe
 * Ringleader of the Tormentors, an album by the singer Morrissey
 * The Ringleader: Mixtape Volume III, an album by the disc jockey DJ Maj
 * A gang leader