NCMEC is the nation’s largest and most influential child protection organization. Every child deserves safe childhood. #40YearsofHope NCMEC is the nation’s largest & most influential child protection organization. The National Center for Missing & Exploited Children (NCMEC) is a private, nonprofit 501(c)(3) corporation whose mission is to help find missing children, reduce child sexual exploitation, and prevent child victimization. NCMEC works with families, victims, private industry, law enforcement, and the public to assist with preventing child abductions, recovering missing children, and providing services to deter and combat child sexual exploitation.