| Country | Head of state | Head of government |
| Afghanistan | Hamid Karzai |
| Albania | Alfred Moisiu | Fatos Nano |
| Algeria | Abdelaziz Bouteflika | Ahmed Ouyahia |
| Andorra | Joan Enric Vives Sicília (represented by Nemesi Marqués Oste)
and Jacques Chirac (represented by Philippe Massoni) | Marc Forné Molné |
| Angola | José Eduardo dos Santos | Fernando da Piedade Dias dos Santos |
| Antigua and Barbuda | Elizabeth II, represented by Sir James Carlisle | Baldwin Spencer |
| Argentina | Néstor Kirchner |
| Armenia | Robert Kocharyan | Andranik Margaryan |
| Australia | Elizabeth II, represented by Michael Jeffery | John Howard |
| Austria | Heinz Fischer | Wolfgang Schüssel |
| Azerbaijan | İlham Əliyev | Artur Rasizade |
| Bahamas | Elizabeth II, represented by Dame Ivy Dumont | Perry Christie |
| Bahrain | Hamad ibn Isa Al Khalifa | Khalifa ibn Salman Al Khalifa |
| Bangladesh | Iajuddin Ahmed | Khaleda Zia |
| Barbados | Elizabeth II, represented by Sir Clifford Husbands | Owen Arthur |
| Belarus | Aleksandr Lukashenko | Sergey Sidorsky |
| Belgium | Albert II | Guy Verhofstadt |
| Belize | Elizabeth II, represented by Sir Colville Young | Said Musa |
| Benin | Mathieu Kérékou |
| Bhutan | Jigme Singye Wangchuk | Lyonpo Yeshey Zimba |
| Bolivia | Carlos Mesa |
| Bosnia and Herzegovina | Borislav Paravac (President of the Presidency), Sulejman Tihić, Dragan Čović | Adnan Terzić |
| Botswana | Festus Mogae |
| Brazil | Luiz Inácio Lula da Silva |
| Brunei | Sir Hassanal Bolkiah |
| Bulgaria | Georgi Purvanov | Simeon Sakskoburggotski |
| Burkina Faso | Blaise Compaoré | Paramanga Ernest Yonli |
| Burundi | Domitien Ndayizeye |
| Cambodia | Norodom Sihamoni | Samdech Hun Sen |
| Cameroon | Paul Biya | Ephraïm Inoni |
| Canada | Elizabeth II, represented by Adrienne Clarkson | Paul Martin |
| Cape Verde | Pedro Pires | José Maria Neves |
| Central African Republic | François Bozizé | Célestin Gaombalet |
| Chad | Idriss Déby | Pascal Yoadimnadji |
| Chile | Ricardo Lagos |
| China (PRC) | Hu Jintao | Wen Jiabao |
| Colombia | Álvaro Uribe |
| Comoros | Azali Assoumani |
| Congo (Brazzaville) | Denis Sassou-Nguesso | Isidore Mvouba (titular) |
| Congo (Kinshasa) | Joseph Kabila |
| Costa Rica | Abel Pacheco |
| Côte d'Ivoire | Laurent Gbagbo | Seydou Diarra |
| Croatia | Stipe Mesić | Ivo Sanader |
| Cuba | Fidel Castro |
| Cyprus | Tassos Papadopoulos |
| Czech Republic | Václav Klaus | Stanislav Gross |
| Denmark | Margrethe II | Anders Fogh Rasmussen |
| Djibouti | Ismaël Omar Guelleh | Dileita Mohamed Dileita |
| Dominica | Nicholas Liverpool | Roosevelt Skerrit |
| Dominican Republic | Leonel Fernández |
| East Timor | Xanana Gusmão | Mari Alkatiri |
| Ecuador | Lucio Gutiérrez |
| Egypt | Hosni Mubarak | Ahmed Nazif |
| El Salvador | Antonio Saca |
| Equatorial Guinea | Teodoro Obiang Nguema Mbasogo | Miguel Abia Biteo Boricó |
| Eritrea | Isaias Afewerki |
| Estonia | Arnold Rüütel | Juhan Parts |
| Ethiopia | Girma Wolde-Giorgis | Meles Zenawi |
| Fiji | Ratu Josefa Iloilo | Laisenia Qarase |
| Finland | Tarja Halonen | Matti Vanhanen |
| France | Jacques Chirac | Jean-Pierre Raffarin |
| Gabon | Omar Bongo | Jean-François Ntoutoume Emane |
| Gambia | Yahya Jammeh |
| Georgia | Mikheil Saakashvili | vacant |
| Germany | Horst Köhler | Gerhard Schröder |
| Ghana | John Kufuor |
| Greece | Kostis Stephanopoulos | Kostas Karamanlis |
| Grenada | Elizabeth II, represented by Sir Daniel Williams | Keith Mitchell |
| Guatemala | Óscar Berger |
| Guinea | Lansana Conté | Cellou Dalein Diallo |
| Guinea-Bissau | Henrique Rosa | Carlos Gomes |
| Guyana | Bharrat Jagdeo | Sam Hinds |
| Haiti | Boniface Alexandre | Gérard Latortue |
| Honduras | Ricardo Maduro |
| Hungary | Ferenc Mádl | Ferenc Gyurcsány |
| Iceland | Ólafur Ragnar Grímsson | Halldór Ásgrímsson |
| India | A.P.J. Abdul Kalam | Manmohan Singh |
| Indonesia | Susilo Bambang Yudhoyono |
| Iran | Ali Khamenei (Rahbar - "leader"); Mohammad Khatami (president) |
| Iraq | Ghazi al-Yawar | Iyad Allawi |
| Ireland | Mary McAleese | Bertie Ahern |
| Israel | Moshe Katsav | Ariel Sharon |
| Italy | Carlo Azeglio Ciampi | Silvio Berlusconi |
| Jamaica | Elizabeth II, represented by Sir Howard Cooke | Percival Patterson |
| Japan | Akihito | Junichiro Koizumi |
| Jordan | Abdullah II | Faisal al-Fayez |
| Kazakhstan | Nursultan Nazarbayev | Daniyal Akhmetov |
| Kenya | Mwai Kibaki |
| Kiribati | Anote Tong |
| Korea (DPRK) | Kim Yong Nam (Head of State for Foreign Affairs);
Kim Jong Il (highest administrative authority) | Pak Pong Ju |
| Korea (ROK) | Roh Moo Hyun | Lee Hai Chan |
| Kuwait | Jaber Al Ahmad Al Jaber Al Sabah | Sabah Al Ahmad Al Jaber Al Sabah |
| Kyrgyzstan | Askar Akayev | Nikolai Tanayev |
| Laos | Khamtai Siphandon | Boungnang Vorachith |
| Latvia | Vaira Vīķe-Freiberga | Aigars Kalvītis |
| Lebanon | Émile Lahoud | Omar Karami |
| Lesotho | Letsie III | Pakalitha Mosisili |
| Liberia | Gyude Bryant |
| Libya | Mu'ammar Al Qadhafi (de facto);
Zentani Muhammad az-Zentani (de jure) | Shukri Ghanem |
| Liechtenstein | Hans-Adam II (Sovereign Prince);
Prince Alois (Regent) | Otmar Hasler |
| Lithuania | Valdas Adamkus | Algirdas Brazauskas |
| Luxembourg | Henri | Jean-Claude Juncker |
| Republic of Macedonia | Branko Crvenkovski | Vlado Bučkovski |
| Madagascar | Marc Ravalomanana | Jacques Sylla |
| Malawi | Bingu wa Mutharika |
| Malaysia | Tuanku Syed Sirajuddin ibni al-Marhum Syed Putra Jamalullail | Datuk Seri Abdullah Ahmad Badawi |
| Maldives | Maumoon Abdul Gayoom |
| Mali | Amadou Toumani Touré | Ousmane Issoufi Maïga |
| Malta | Eddie Fenech Adami | Lawrence Gonzi |
| Marshall Islands | Kessai Note |
| Mauritania | Maaouya Ould Sid'Ahmed Taya | Sghaïr Ould M'Bareck |
| Mauritius | Sir Anerood Jugnauth | Paul Bérenger |
| Mexico | Vicente Fox |
| Micronesia | Joseph Urusemal |
| Moldova | Vladimir Voronin | Vasile Tarlev |
| Monaco | Rainier III | Patrick Leclercq |
| Mongolia | Natsagiyn Bagabandi | Tsakhiagiyn Elbegdorj |
| Morocco | Muhammad VI | Driss Jettou |
| Mozambique | Armando Guebuza | Luisa Diogo |
| Myanmar | Than Shwe | Soe Win |
| Namibia | Sam Nujoma | Theo-Ben Gurirab |
| Nauru | Ludwig Scotty |
| Nepal | Gyanendra |
| Netherlands | Beatrix | Jan Peter Balkenende |
| New Zealand | Elizabeth II, represented by Dame Silvia Cartwright | Helen Clark |
| Nicaragua | Enrique Bolaños |
| Niger | Tandja Mamadou | Hama Amadou |
| Nigeria | Olusegun Obasanjo |
| Norway | Harald V | Kjell Magne Bondevik |
| Oman | Qaboos ibn Sa’id Al ’Bu Sa’id |
| Pakistan | Pervez Musharraf | Shaukat Aziz |
| Palau | Tommy Remengesau |
| Panama | Martín Torrijos |
| Papua New Guinea | Elizabeth II, represented by Sir Paulias Matane | Sir Michael Somare |
| Paraguay | Nicanor Duarte |
| Peru | Alejandro Toledo | Carlos Ferrero Costa |
| Philippines | Gloria Macapagal-Arroyo |
| Poland | Aleksander Kwaśniewski | Marek Belka |
| Portugal | Jorge Sampaio | Pedro Santana Lopes |
| Qatar | Hamad ibn Khalifa Al Thani | Abdullah ibn Khalifa Al Thani |
| Romania | Traian Băsescu | Călin Popescu-Tăriceanu |
| Russia | Vladimir Putin | Mikhail Fradkov |
| Rwanda | Paul Kagame | Bernard Makuza |
| St. Kitts and Nevis | Elizabeth II, represented by Sir Cuthbert Sebastian | Denzil Douglas |
| St. Lucia | Elizabeth II, represented by Dame Pearlette Louisy | Kenny Anthony |
| St. Vincent and the Grenadines | Elizabeth II, represented by Sir Frederick Ballantyne | Ralph Gonsalves |
| Samoa | Malietoa Tanumafili II | Tuila'epa Sailele Malielegaoi |
| San Marino | Giuseppe Arzilli and Roberto Raschi | Fabio Berardi |
| São Tomé and Príncipe | Fradique de Menezes | Damião Vaz d'Almeida |
| Saudi Arabia | Fahd | Fahd (de jure), Crown Prince Abdullah (de facto) |
| Senegal | Abdoulaye Wade | Macky Sall |
| Serbia and Montenegro | Svetozar Marović |
| Seychelles | James Michel |
| Sierra Leone | Ahmad Tejan Kabbah |
| Singapore | S.R. Nathan | Lee Hsien Loong |
| Slovakia | Ivan Gašparovič | Mikuláš Dzurinda |
| Slovenia | Janez Drnovšek | Janez Janša |
| Solomon Islands | Elizabeth II, represented by Nathaniel Waena | Sir Allan Kemakeza |
| Somalia | Abdullahi Yusuf Ahmed | Ali Muhammad Ghedi |
| South Africa | Thabo Mbeki |
| Spain | Juan Carlos I | José Luis Rodríguez Zapatero |
| Sri Lanka | Chandrika Kumaratunga | Mahinda Rajapakse |
| Sudan | Omar Hassan Ahmad al-Bashir |
| Suriname | Ronald Venetiaan | Jules Ajodhia |
| Swaziland | Mswati III | Themba Dlamini |
| Sweden | Carl XVI Gustav | Göran Persson |
| Switzerland | Moritz Leuenberger, Pascal Couchepin, Joseph Deiss, Samuel Schmid (President)1, Micheline Calmy-Rey, Christoph Blocher, Hans-Rudolf Merz |
| Syria | Bashar al-Assad | Muhammad Naji al-Otari |
| Taiwan (ROC) | Chen Shui-bian | Frank Hsieh |
| Tajikistan | Emomali Rahmonov | Okil Okilov |
| Tanzania | Benjamin Mkapa | Frederick Sumaye |
| Thailand | Bhumibol Adulyadej | Thaksin Shinawatra |
| Togo | Faure Gnassingbé | Koffi Sama |
| Tonga | Taufa'ahau Tupou IV | Prince 'Ulukalala Lavaka Ata |
| Trinidad and Tobago | Maxwell Richards | Patrick Manning |
| Tunisia | Zine El Abidine Ben Ali | Mohamed Ghannouchi |
| Turkey | Ahmet Necdet Sezer | Recep Tayyip Erdoğan |
| Turkmenistan | Saparmurat Niyazov |
| Tuvalu | Elizabeth II, represented by Faimalaga Luka | Maatia Toafa |
| Uganda | Yoweri Museveni | Apolo Nsibambi |
| Ukraine | Viktor Yushchenko | Yuliya Tymoshenko |
| United Arab Emirates | Khalifa ibn Zayed Al Nahayan | Maktum ibn Rashid Al Maktum |
| United Kingdom | Elizabeth II | Tony Blair |
| United States of America | George W. Bush |
| Uruguay | Jorge Batlle |
| Uzbekistan | Islam Karimov | Shavkat Mirziyayev |
| Vanuatu | Kalkot Mataskelekele | Ham Lini |
| Vatican City | John Paul II | Angelo Cardinal Sodano |
| Venezuela | Hugo Chávez |
| Vietnam | Trần Đức Lương | Phan Văn Khải |
| Yemen | Ali Abdullah Saleh | Abdul Qader Bajammal |
| Zambia | Levy Mwanawasa |
| Zimbabwe | Robert Mugabe |
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