UNGA: General assembly
UNSC: Security council
ECOSOC: Economic and social council
UNTC: Trusteeship council
ICIJ: International court of justice
UNSEC: Secretariat
UNSCEB:  United Nations System
UNDP:  United Nations Development Programme
UNICEF:  United Nations Children's Fund
UNHCR:  United Nations High Commissioner for Refugees
WFP:  World Food Programme
UNODC:  United Nations Office on Drugs and Crime
UNFPA:  United Nations Population Fund
UNCTAD:  United Nations Conference on Trade and Development
UNEP:  United Nations Environment Programme
UNRWA:  United Nations Relief and Works Agency for Palestine Refugees
UN Women: UN Women
UN-Habitat: United Nations Human Settlements Programme  
WBG:  World Bank Group
IBRD: International Bank for Reconstruction and Development
ICSID: International Centre for Settlement of Investment Disputes
IDA: International Development Association
IFC: International Finance Corporation
MIGA: Multilateral Investment Guarantee Agency 
IMF: International Monetary Fund 
ICAO:  International Civil Aviation Organization
WHO:  World Health Organization
UNESCO:  United Nations Educational, Scientific and Cultural Organization
ICC:  International Chamber of Commerce
ILO: International Labor Organization
IOE: International Organization of employers
FAO: Food and Agriculture Organization
IFAD: International Fund for Agricultural Development,
IMO:  International Maritime Organization
WMO:  World Meteorological Organization
WIPO:  World Intellectual Property Organization
ICAO:  International Civilian Aviation Organization
ITU:  International Telecommunication Union
UNIDO:  United Nations Industrial Development Organization
UPU:  Universal Postal Union
UNWTO:  World Tourism Organization
UNAIDS:  Joint United Nations Programme on HIV/AIDS
UNISDR:  United Nations Office for Disaster Reduction
UNOPS: United Nations Office for Project Services
IAEA:  International Atomic Energy Agency,
WTO:  World Trade Organization
CTBTO:  Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization
OPCW:  Organisation for the Prohibition of Chemical Weapons
IOM:  International Organization for Migration
ITC: International Trade Centre
OHCHR:  Office of the United Nations High Commissioner for Human Rights
UNCDF:  United Nations Capital Development Fund
UNV:  United Nations Volunteers
GHP: Global Humanitarian Platform
IANWGE: Inter-Agency Network on Women and Gender Equality
IASC: Inter-Agency Standing Committee
INCAF: International Network on Conflict and Fragility
IPCC: The Intergovernmental Panel on Climate Change
NGLS: United Nations Non-Governmental Liaison Service
CCSA: Committee for the Coordination of Statistical Activities
GCIA: Global Compact Inter-Agency Team
FSN: Global Food Security and Nutrition Forum
GMG: Global Migration Group
IAEG: Inter-agency and Expert Group on MDG Indicators
IANYD: Inter-Agency Network on Youth Development (IANYD)

IASMN: Inter-Agency Security Management Network 
PEDRR: Partnership for Environment and Disaster Risk Reduction
INEE: The Inter-Agency Network for Education in Emergencies
UN ACTION: UN Action Network Against Sexual Violence in Armed Conflict
IAC: UN Inter-Agency Committee for the DESD
JIU: Joint Inspection Unit 
EMG: United Nations Environment Management Group
UNEG: United Nations Evaluation Group
UNFF: United Nations Forum on Forests
UNGIWG: United Nations Geographic Information Working Group
UNSPN: United Nations Strategic Planning Network
UNSCN: United Nations System Standing Committee on Nutrition

HLCM: High-Level Committee on Management 
HLCP: High-Level Committee on Programmes
UNDG: United Nations Development Group

Working Group on Country Office Business Operations Issues