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An Under-Secretary-General of the United Nations (USG) is a senior official within the United Nations System, normally appointed by the UN General Assembly on the recommendation of the UN Secretary-General for a repeatable term of four years.

Contents 1 Appointment and accountability 2 Equivalent rank 3 Diplomatic Rank 4 Senior Management Group (SMG) 5 List of Under-Secretaries-General 5.1 Programmes and Commissions 5.2 Secretariat Officials 5.3 Advisers 5.4 Special Envoys 6 Other Senior UN Positions 6.1 Deputy Secretary-General 6.2 Assistant-Secretary-General 7 External links

The majority of USGs are appointed by the UN General Assembly on the recommendation of the UN Secretary-General for a fixed term of four years. Others (normally special envoys, Secretariat-appointees and non-programme management positions) are appointed directly by the UN Secretary-General on his own authority. However, all USGs report to the UN General Assembly through the UN Secretary-General. The only exception to this is the Under-Secretary-General for Internal Oversight Services who reports directly to the General Assembly.

The distinction in method of appointment is important as USGs appointed by the General Assembly have a mandate independent of the Secretary-General, and he is therefore unable to remove them from office without the General Assembly's consent. This restriction has been seen by many commentators to weaken the Secretary-General's ability to provide strong leadership and management within the United Nations System.

Some senior posts within the UN System have the equivalent rank of Under-Secretary-General but are either not entitled or choose not to use the formal title. The most prominent example of this is the Administrator of the United Nations Development Programme, who is often referred to as the third most senior official within the UN System yet does not use the title of Under-Secretary-General.

USGs have diplomatic rank equivalent to that of a national Cabinet Minister. By virtue of Article 105 of the UN Charter they have diplomatic immunity.

With over 50 people with the rank of Under-Secretary-General, unsurprisingly the influence and power they wield within the UN System varies dramatically. The most important USGs, controlling budgets, programmes or key activities, are also members of the Secretary-General's Senior Management Group, whose objective is to ensure strategic coherence and direction in the work of the Organization. The cabinet was approved by the General Assembly in 1997 as part of the reform proposal submitted by Secretary-General Kofi Annan. Members of the SMG are indicated on the below list by an asterisk (*).

The following is a list of Under-Secretaries-General or those with equivalent rank. This list is not exhaustive.

• Thoraya Ahmed Obaid * - Executive Director, UNFPA
• Antonio Maria Costa * - Director-General, United Nations Office Vienna and Chief Executive, UN International Drug Control Programme
• Louise Arbour * - High Commissioner for Human Rights (UNHCHR)
• Anna Tibaijuka * - Executive Director, United Nations Human Settlements Programme
• Marek Belka * - Economic Commission for Europe
• Ann Veneman * - UN Children's Fund (UNICEF)
• Mervat M Tallawy * - Economic and Social Commission for Western Asia
• Supachai Panitchpakdi * - UN Conference on Trade and Development (UNCTAD)
• Achim Steiner * - UN Environment Programme (UNEP)
• Abdoulie Janneh * - Executive Secretary, Economic Commission for Africa
• José Luis Machinea * - Economic Commission for Latin America and the Caribbean
• Josette Sheeran * - World Food Programme
• António Guterres * - High Commissioner for Refugees (UNHCR)
• Noleen Heyzer * - Economic and Social Commission for Asia and Pacific
• Kemal Derviş * - Administrator, United Nations Development Programme
• Ad Melkert - Associate Administrator, United Nations Development Programme
• Peter Piot - Executive Director, UNAIDS

• Sergio de Queiroz Duarte * - Disarmament Affairs
• Radhika Coomaraswamy - Special Representative for Children and Armed Conflict
• Jean-Marie Guéhenno * - Department of Peacekeeping Operations
• John Holmes * - Humanitarian Affairs
• Kiyotaka Akasaka * - Communication and Public Information
• Muhammad Shaaban * - General Assembly Affairs
• Alicia Barcena Ibarra * - Management
• Sha Zukang * - Department of Economic and Social Affairs
• Nicolas Michel * - Legal Affairs
• David Veness * - Safety and Security
• Sergei Ordzhonikidze * - United Nations Office Geneva
• Inga-Britt Ahlenius * - Internal Oversight Services
• B. Lynn Pascoe * - Political Affairs
• Mohsen Bel Hadj Amor - Chairman of the International Civil Service Commission
• Eugeniusz Wyzner - Vice-Chairman of the International Civil Service Commission

• Vijay Nambiar * - Special Adviser to the Secretary-General
• Nitin Desai - World Summit on the Information Society
• Joseph Legwaila - Special Adviser on Africa
• Joseph V. Reed - Special Adviser to the Secretary-General
• Iqbal Riza - Special Adviser to the Secretary-General
• Jeffrey Sachs - Senior Adviser to the Secretary-General on the Millennium Development Goals and Director of the United Nations Millennium Project

• Cheick Sidi Diarra * - Special Envoy for Least Developed Countries, Landlocked and Small Island Developing States
• Bill Clinton - Special Envoy for Tsunami Recovery
• Eric Paul Schwartz - Deputy Special Envoy for Tsunami Recovery
• Nafis I. Sadik - Special Envoy for AIDS in Asia
• Stephen Lewis - Special Envoy for Aids in Africa

The Deputy Secretary-General is the second highest ranking official in the UN System after the Secretary-General. Asha-Rose Mtengeti Migiro is the current office holder.

An Assistant-Secretary-General sits beneath an Under-Secretary-General within the UN hierarchy. Assistant-Secretaries-General are often deputies within Departments or Programmes, reporting to their respective Under-Secretary-General and through him/her to the UN Secretary General.

• UN Protocol and Liaison Service - List of Senior UN Officials
• List of UN Senior Management Group with biographies and photos

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