Organization Title Leader Country In office Ref African, Caribbean and Pacific Group of States (ACP) Secretary-general Patrick Gomes Guyana 2015–2020 [ 29] African Union Chairperson Idriss Déby Chad 2016–2017 [ 30] Alpha Condé Guinea 2017–2018 [ 31] Chairperson of the Commission Nkosazana Dlamini-Zuma South Africa 2012–2017 [ 32] Moussa Faki Chad 2017–present[ needs update ] [ 33] President of the Pan-African Parliament Roger Nkodo Dang Cameroon 2015–2021 [ 34] Andean Community Secretary-general Walker San Miguel Bolivia 2016–2017 [ 35] [ 36] Arab League Secretary-general Ahmed Aboul Gheit Egypt 2016–present [ 37] [ 38] Arab Maghreb Union Secretary-general Taïeb Baccouche Tunisia 2016–present[ needs update ] [ 39] [ 40] Asia-Pacific Economic Cooperation (APEC) Executive director Alan Bollard New Zealand 2013–2018 [ 41] Association of Southeast Asian Nations (ASEAN) Secretary-general Lê Lương Minh Vietnam 2013–2017 [ 42] Caribbean Community Secretary-general Irwin LaRocque Dominica 2011–2021 [ 43] Central American Parliament President Priscilla Weeden de Miró Panama 2016–2017 [ 44] Tony Raful Tejada Dominican Republic 2017–2018 [ 45] Common Market of East and Southern Africa (COMESA) Secretary-general Sindiso Ngwenya Zimbabwe 2008–2018 [ 46] [ 47] Commonwealth of Nations Head Queen Elizabeth II United Kingdom 1952–present [ 48] [ 49] Secretary-general Patricia Scotland 2016–present [ 50] Commonwealth of Independent States Executive secretary Sergei Lebedev Russia 2007–present [ 51] [ 52] Council of Europe Secretary General Thorbjørn Jagland Norway 2009–2019 [ 53] [ 54] President of the Parliamentary Assembly of the Council of Europe (PACE) Pedro Agramunt Spain 2016–2017 [ 55] Stella Kyriakides Cyprus 2017–2018 [ 56] President of the European Court of Human Rights Guido Raimondi Italy 2015–2019 [ 57] East African Community Secretary-general Libérat Mfumukeko Burundi 2015–2021 [ 58] Chairman John Magufuli Tanzania 2015–2017 [ 59] Yoweri Museveni Uganda 2017–2019 [ 60] [ 61] Economic Community of West African States (ECOWAS) President of the Commission Marcel Alain de Souza Benin 2016–2018 [ 62] Chairman Ellen Johnson Sirleaf Liberia 2016–2017 [ 63] Faure Gnassingbé Togo 2017–2018 [ 63] [ 64] European Free Trade Association Secretary-general Kristinn F. Árnason Iceland 2012–2018 [ 65] European Union (EU) Presidency of the European Council Donald Tusk Poland 2014–2019 [ 66] Presidency of the Council of the European Union Malta 2017 [ 67] Estonia [ 67] President of the European Commission Jean-Claude Juncker Luxembourg 2014–2019 [ 68] President of the European Parliament Martin Schulz Germany 2012–2017 [ 69] Antonio Tajani Italy 2017–2019 [ 70] Secretary-General of the Council and High Representative for the Common Foreign and Security Policy Federica Mogherini 2014–2019 [ 71] President of the European Central Bank Mario Draghi 2011–2019 [ 72] European Ombudsman Emily O'Reilly Ireland 2013–present[ needs update ] [ 73] President of the Committee of the Regions (CoR) Markku Markkula Finland 2015–2017 [ 74] Karl-Heinz Lambertz Belgium 2017–2020 [ 75] President of the European Investment Bank (EIB) Werner Hoyer Germany 2012–present [ 76] [ 77] President of the European Court of Justice (ECJ) Koen Lenaerts Belgium 2015–present[ needs update ] [ 78] President of the European Court of Auditors (ECA) Klaus-Heiner Lehne Germany 2016–present[ needs update ] [ 79] President of the European Economic and Social Committee (EESC) Georges Dassis Greece 2015–2018 [ 80] Group of Seven (G7) (Russia suspended from G8 in 2014) President (informal) Italy 2017 [ 81] Gulf Cooperation Council Secretary-general Abdullatif bin Rashid Al Zayani Bahrain 2011–2020 [ 82] Ibero-American General Secretariat (SEGIB) Secretary-general Rebeca Grynspan Costa Rica 2014–2021 [ 83] Indian Ocean Commission Secretary-general Hamada Madi Comoros 2016–2020 [ 84] Eurasian Economic Union Chairman Kyrgyzstan 2017 [ citation needed ] Non-Aligned Movement (NAM) Chairman Nicolás Maduro Venezuela 2016–2019 [ 85] Nordic Council President Britt Lundberg Finland 2017 [ 86] Secretary-general Britt Bohlin Sweden 2014–2021 [ 87] North Atlantic Treaty Organization (NATO) Secretary-general Jens Stoltenberg Norway 2014–present[ needs update ] [ 88] [ 89] Organisation for Economic Co-operation and Development (OECD) Secretary-general José Ángel Gurría Mexico 2006–2021 [ 90] Organization for Security and Co-operation in Europe (OSCE) Secretary-general Lamberto Zannier Italy 2011–2017 [ 91] Thomas Greminger Switzerland 2017–2020 [ 92] Chairman-in-Office Frank-Walter Steinmeier Serbia 2016 [ 93] Sebastian Kurz Austria 2017 [ 94] Karin Kneissl 2017 [ 95] High Commissioner on National Minorities Lamberto Zannier Italy 2017–2020 [ 96] Organisation of Eastern Caribbean States Director-general Didacus Jules Saint Lucia 2014–present[ needs update ] [ 97] [ 98] Organisation of Islamic Cooperation (OIC) Secretary-general Yousef Al-Othaimeen Saudi Arabia 2016–2020 [ 99] Pacific Community (SPC) Director-general Colin Tukuitonga Niue 2014–2020 [ 100] Pacific Islands Forum Secretary-general Meg Taylor Papua New Guinea 2014–2021 [ 101] Shanghai Cooperation Organisation (SCO) Secretary-general Rashid Alimov Tajikistan 2016–2018 [ 102] South Asian Association for Regional Cooperation (SAARC) Secretary-general Arjun Bahadur Thapa Nepal 2014–2017 [ 103] Amjad Hussain B. Sial Pakistan 2017–2020 [ citation needed ] Southern Cone Common Market (Mercosur) Director of the Executive Secretariat Linda Rabbaglietti Love Uruguay 2017–2018 [ 104] Southern African Development Community (SADC) Executive secretary Stergomena Tax Tanzania 2013–2021 [ 105] Union of South American Nations (UNASUR) President Nicolás Maduro Venezuela 2016–2017 [ 106] Mauricio Macri Argentina 2017–2018 [ 106] Secretary-general Ernesto Samper Colombia 2014–2017 [ 107] Position vacant 2017–present [ 108] 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 [ 109]