International
EUROPEAN
UNION
Former series issued in Belgium (1975 - 2000), for vehicles used by the European Union and its employees
UNITED NATIONS ORGANIZATION
Old series (1992 - 1993), UNTAC = United Nations Transitional Authority in Cambodia
NORTH ATLANTIC TREATY ORGANIZATION
Former series (1996 - 2005), SFOR = N.A.T.O. Stabilization Force, used in Bosnia-Herzegovina