UNIO - United Nations and Other International Organizations

OTLA - Office of Treaty and Legal Affairs

ISU - Intelligence and Security Unit

UBRAA - Undersecretary for Bilateral Relations and ASEAN Affairs

OUMWA - Office of Undersecretary of Migrant Workers Affairs

MOAO - Maritime and Ocean Affairs Office

OVS - Overseas Voting Secretariat

IAS - Internal Audit Service

DLLU - Department Legislative Liaison Unit

OAA - Office of American Affairs

OAMSS - Office of Assets Management Support Services

OP - Office of Protocol

OUA - Office of Undersecretary Administration

OSEC - Office of Secretary

OPCD - Office of Public and Cultural Diplomacy

OMEAA - Office of Middle East and African Affairs

OFMS - Office of Financial Management Services

ASPAC - Office of Asian and Pacific Affairs

OUCSCA - Office of Undersecretary for Civilian Security and Consular Affairs

OPPC - Office of Policy Planning and Coordination

OUMAIER - Office of Undersecretary for Multilateral Affairs and International Economic Relations

HRMO - Human Resource Management Office

OEA - Office of European Affairs

OCA - Office of Consular Affairs