Disasters are defined medically as mass casualty incidents in which the number of patients presenting during a given time period exceeds the capacity of the responders to render effective care in a timely manner. During such circumstances, triage is instituted to allocate scarce medical resources. Current disaster triage attempts to do the most for the most, with the least amount of resources. This article reviews the nature of disasters from the standpoint of immediate medical need, and places into an ethics framework currently proposed utilitarian triage schema for prioritizing medical care of surviving disaster victims. Specific questions include whether resources truly are limited, whether specific numbers should dictate disaster response, and whether triage decisions should be based on age or social worth. The primary question the authors pose is whether disaster triage, as currently advocated and practiced in the western world, is actually ethical.