NCJA - National Criminal Justice AssociationThe National Criminal Justice Association (NCJA) is a 501(c)(3) not-for-profit, non-partisan, member association dedicated to assisting criminal justice agencies in the development and implementation of effective criminal justice policy. Our members represent all facets of the criminal and juvenile justice community, including law enforcement, corrections, prosecution, defense, courts, victim and witness services, and academics, as well as elected officials.