The management of mass gatherings encompasses a wide range of activities because of varying types of events and baseline medical and health infrastructures. A classification system for mass gatherings can aid in the planning process internationally and also achieve a commonality of language for describing future events. This cycle of event, analysis, training, planning, and new event should be the goal for those involved in organizing mass gathering medical care. The event plan specifies the various training requirements, certifications, and indemnity/malpractice or insurance required of the medical director and deputy. Management of a mass gathering from the medical perspective requires human resources, medical equipment, pharmaceuticals, and medical facilities with sufficient examination rooms on site. As mass gatherings become more frequent, more experts need to be trained and more research performed to ensure continued reductions in morbidity and mortality among those attending or managing such events.