African, Caribbean and Pacific Group of States (ACP) -
Secretary-General - Mohamed Ibn Chambas, Ghana (2010–pres
Arab League -
Secretary-General - Nabil Elaraby, Egypt (2011–present)
Arab Maghreb Union
Secretary-General - Habib Ben Yahia, Tunisia (2006–present)
Asia-Pacific Economic Cooperation (APEC)
Executive Director - Muhamad Noor, Malaysia (2010–present)
Association of Southeast Asian Nations (ASEAN) -
Secretary-General - Le Luong Minh, Vietnam (2013–present)
Caribbean Community -
Secretary-General - Lolita Applewhaite, Barbados (2011–present)
Central American Parliament -
President - Dorindo Cortéz, Panama (2010–present)
Common Market of East and Southern Africa (COMESA) -
Secretary-General - Sindiso Ngwenya, Zimbabwe (2008–present)
Commonwealth of Nations -
Head - Queen Elizabeth II (1952–present)
Secretary-General - Kamalesh Sharma, India (2008–present)
Commonwealth of Independent States
Executive Secretary - Sergei Lebedev, Russia (2007–present)
Council of Europe
Secretary General - Thorbjřrn Jagland, Norway (2009–present)
President of the Parliamentary Assembly of the Council of Europe (PACE) - Mevlüt Çavuşoğlu, Turkey (2010–present)
President of the European Court of Human Rights - Jean-Paul Costa, France (2007–present)
East African Community -
Secretary-General - Richard Sezibera, Rwanda (2011–present)
Economic Community of West African States
President of the Commission - Victor Gbeho, Ghana (2010–present)
Chairman - Alassane Ouattara, Côte d'Ivoire (2012–present)
Eurasian Economic Community
Secretary-General - Tair Mansurov, Khazakstan (2007–present)
Chairman of the Interstate Council - Nursultan Nazarbayev, Kazakhstan (2001–present)
European Free Trade Association
Secretary-General - Kristinn Árnason, Iceland (2012–present)
European Union (EU)
Presidency of the European Council - Herman Van Rompuy (2009–present)
Presidency of the European Union Council
Ireland (2013)
President of the European Commission - José Manuel Barroso, Portugal (2004–present)
President of the European Parliament - Jerzy Buzek, Poland (2010–present)
Secretary-General of the Council and High Representative for the Common Foreign and Security Policy - Catherine Ashton, United Kingdom (2009–present)
President of the European Central Bank - Mario Draghi, Italy (2011–present)
European Ombudsman - Nikiforos Diamandouros, Greece (2003–present)
President of the Committee of the Regions (CoR) - Peter Straub, Germany (2004–present)
President of the European Investment Bank (EIB) - Werner Hoyer, Germany (2012–present)
President of the European Court of Justice (ECJ) - Vassilios Skouris, Greece (2003–present)
President of the European Court of Auditors - Hubert Weber, Austria (2005–present)
President of the Economic and Social Committee (ESC) - Anne-Marie Sigmund, Austria (2004–present)
Group of Eight (G8)
President (informal) - David Cameron, United Kingdom (2013)
Gulf Cooperation Council
Secretary-General - Abdullatif bin Rashid Al Zayani, Bahrain (2011–present
)
Ibero-American Secretariat (Segib)
Secretary-General - Enrique V. Iglesias, Uruguay (2005–present)
Indian Ocean Commission
Secretary-General - Monique Andreas Esoavekomandroso, Madagascar (2004–present)
Non-Aligned Movement (NAM)
Chairman -
Mahmoud Ahmadinejad, Iran (2012–2013)
Hassan Rouhani, Iran (2013–present)
Nordic Council
Secretary-General - Jan-Erik Enestam, Finland (2007–2013)
North Atlantic Treaty Organisation
Secretary-General - Anders Fogh Rasmussen, Denmark (2009–present)
Organisation for Economic Co-operation and Development (OECD)
Secretary-General - José Ángel Gurría, Mexico (2006–present)
Organization for Security and Co-operation in Europe (OSCE)
Secretary-General - Lamberto Zannier, Italy (2011–present)
Chairman-in-Office - Audronius Ažubalis, Lithuania (2011–present)
High Commissioner on National Minorities - Knut Vollebćk, Norway (2007–present)
Organization of American States
Secretary-General - José Miguel Insulza, Chile (2005–present)
Organisation of Eastern Caribbean States
Director-General - Len Ishmael, Saint Lucia (2003–present)
Organisation of Islamic Cooperation
Secretary-General - Iyad bin Amin Madani, Saudi Arabia (2014–present)
Pacific Community
Director-General - Jimmie Rodgers, Solomon Islands (2006–present)
Pacific Islands Forum
Secretary-General - Tuiloma Neroni Slade, Samoa (2008–present)
Shanghai Cooperation Organization (SCO)
Secretary-General - Bolat Nurgaliyev, Kazakhstan (2007–present)
South Asian Association for Regional Cooperation
Secretary-General - Ahmed Saleem, Maldives (2012–present)
Southern Cone Common Market (Mercosur)
Director of the Executive Secretariat - Agustín Colombo Sierra, Argentina (2009–present)
Southern African Development Community
Executive Secretary -
Tomaz Salomăo, Mozambique (2005–2013)
Stergomena Tax, Tanzania (2013–
pr
World Trade Organization (WTO)
Director-General - Roberto Azevędo, Brazil (2013–present)