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 [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 [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 [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 [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]