Organization Title Leader Country In office Ref African, Caribbean and Pacific Group of States (ACP) Secretary-general Muhammad Mumuni Ghana 2013–2015 [ 30] Patrick Gomes Guyana 2015–2020 [ 31] African Union Chairperson Mohamed Ould Abdel Aziz Mauritania 2014–2015 [ 32] Robert Mugabe Zimbabwe 2015–2016 [ 32] Chairperson of the Commission Nkosazana Dlamini-Zuma South Africa 2012–2017 [ 33] President of the Pan-African Parliament Bethel Nnaemeka Amadi Nigeria 2012–2015 [ 34] Roger Nkodo Dang Cameroon 2015–2021 [ 35] Andean Community Secretary-general Pablo Guzmán Laugier Bolivia 2013–2016 [ 36] Arab League Secretary-general Nabil Elaraby Egypt 2011–2016 [ 37] Arab Maghreb Union Secretary-general Habib Ben Yahia Tunisia 2006–2016 [ 38] [ 39] Asia-Pacific Economic Cooperation (APEC) Executive director Alan Bollard New Zealand 2013–2018 [ 40] Association of Southeast Asian Nations (ASEAN) Secretary-general Lê Lương Minh Vietnam 2013–2017 [ 41] Caribbean Community Secretary-general Irwin LaRocque Dominica 2011–2021 [ 42] Central American Parliament President Armando Bardales Honduras 2014–2015 [ 43] José Antonio Alvarado Correa Nicaragua 2015–2016 [ 44] Common Market of East and Southern Africa (COMESA) Secretary-general Sindiso Ngwenya Zimbabwe 2008–2018 [ 45] [ 46] Commonwealth of Nations Head Queen Elizabeth II United Kingdom 1952–present [ 47] [ 48] Secretary-general Kamalesh Sharma India 2008–2016 [ 49] Commonwealth of Independent States Executive secretary Sergei Lebedev Russia 2007–present [ 50] [ 51] Council of Europe Secretary General Thorbjørn Jagland Norway 2009–2019 [ 52] [ 53] President of the Parliamentary Assembly of the Council of Europe (PACE) Anne Brasseur Luxembourg 2014–2016 [ 54] President of the European Court of Human Rights Dean Spielmann 2012–2015 [ 55] Guido Raimondi Italy 2015–2019 [ 56] East African Community Secretary-general Richard Sezibera Rwanda 2011–2016 [ 57] Economic Community of West African States (ECOWAS) President of the Commission Kadré Désiré Ouédraogo Burkina Faso 2012–2016 [ 58] Chairman John Mahama Ghana 2013–2015 [ 59] Macky Sall Senegal 2015–2016 [ 60] [ 61] European Free Trade Association Secretary-general Kristinn F. Árnason Iceland 2012–2018 [ 62] European Union (EU) Presidency of the European Council Donald Tusk Poland 2014–2019 [ 63] Presidency of the Council of the European Union Latvia 2015 [ 64] Luxembourg [ 64] President of the European Commission Jean-Claude Juncker Luxembourg 2014–2019 [ 65] President of the European Parliament Martin Schulz Germany 2012–2017 [ 66] Secretary-General of the Council and High Representative for the Common Foreign and Security Policy Federica Mogherini Italy 2014–2019 [ 67] President of the European Central Bank Mario Draghi 2011–2019 [ 68] European Ombudsman Emily O'Reilly Ireland 2013–present[ needs update ] [ 69] President of the Committee of the Regions (CoR) Michel Lebrun Belgium 2014–2015 [ 70] Markku Markkula Finland 2015–2017 [ 71] President of the European Investment Bank (EIB) Werner Hoyer Germany 2012–present [ 72] [ 73] President of the European Court of Justice (ECJ) Vassilios Skouris Greece 2003–2015 [ 74] Koen Lenaerts Belgium 2015–present[ needs update ] [ 75] President of the European Court of Auditors (ECA) Vítor Manuel da Silva Caldeira Portugal 2008–2017 [ 76] President of the European Economic and Social Committee (EESC) Henri Malosse France 2013–2015 [ 76] Georges Dassis 2015–2018 [ 77] Group of Eight (G8) President (informal) Germany 2015 [ 78] Gulf Cooperation Council Secretary-general Abdullatif bin Rashid Al Zayani Bahrain 2011–2020 [ 79] Ibero-American General Secretariat (SEGIB) Secretary-general Rebeca Grynspan Costa Rica 2014–2021 [ 80] Indian Ocean Commission Secretary-general Jean Claude de l'Estrac Mauritius 2012–2016 [ 81] Non-Aligned Movement (NAM) Chairman Hassan Rouhani Iran 2013–2016 [ 82] Nordic Council President Höskuldur Þórhallsson Iceland 2015 [ 83] Secretary-general Britt Bohlin Sweden 2014–2021 [ 84] North Atlantic Treaty Organization (NATO) Secretary-general Jens Stoltenberg Norway 2014–present[ needs update ] [ 85] [ 86] Organisation for Economic Co-operation and Development (OECD) Secretary-general José Ángel Gurría Mexico 2006–2021 [ 87] Organization for Security and Co-operation in Europe (OSCE) Secretary-general Lamberto Zannier Italy 2011–2017 [ 88] Chairman-in-Office Ivica Dačić Serbia 2015 [ 89] High Commissioner on National Minorities Astrid Thors Finland 2013–2016 [ 90] Organisation of Eastern Caribbean States Director-general Didacus Jules Saint Lucia 2014–present[ needs update ] [ 91] [ 92] Organisation of Islamic Cooperation (OIC) Secretary-general Iyad bin Amin Madani Saudi Arabia 2014–2016 [ 93] Pacific Community (SPC) Director-general Colin Tukuitonga Niue 2014–2020 [ 94] Pacific Islands Forum Secretary-general Meg Taylor Papua New Guinea 2014–2021 [ 95] Shanghai Cooperation Organisation (SCO) Secretary-general Dmitry Mezentsev Russia 2013–2015 [ 96] South Asian Association for Regional Cooperation (SAARC) Secretary-general Arjun Bahadur Thapa Nepal 2014–2017 [ 97] Southern Cone Common Market (Mercosur) Director of the Executive Secretariat Oscar Pastore Paraguay 2014–2016 [ 98] Southern African Development Community (SADC) Executive secretary Stergomena Tax Tanzania 2013–2021 [ 99] Union of South American Nations (UNASUR) President José Mujica Uruguay 2014–2015 [ 100] Tabaré Vázquez 2015–2016 [ 101] Secretary-general Ernesto Samper Colombia 2014–2017 [ 102] Unrepresented Nations and Peoples Organization (UNPO) Secretary-general Marino Busdachin Italy 2003–2018 [ citation needed ] World Trade Organization (WTO) Director-general Roberto Azevêdo Brazil 2013–2020 [ 103]