| Code | Country | Variable | www.Worldata.org ® © | Unit | Share | Rank | Year | Source | Key |
| 1 | Afghanistan | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 89 | ||
| 2 | Albania | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 145 | |
| 3 | Algeria | IOs headquarters | 8 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 1 | |
| 4 | Andorra | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 146 | ||
| 5 | Angola | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 2 | |
| 6 | Antigua and Barbuda | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 54 | |
| 7 | Argentina | IOs headquarters | 77 | IGOs + NGOs | 1.18% | 17 | 2000 | YIO (2002) | 55 |
| 8 | Armenia | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 147 | |
| 9 | Australia | IOs headquarters | 124 | IGOs + NGOs | 1.90% | 12 | 2000 | YIO (2002) | 131 |
| 10 | Austria | IOs headquarters | 109 | IGOs + NGOs | 1.67% | 14 | 2000 | YIO (2002) | 148 |
| 11 | Azerbaijan | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 149 | |
| 12 | Bahamas | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 56 | |
| 13 | Bahrain | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 90 | |
| 14 | Bangladesh | IOs headquarters | 6 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 91 | |
| 15 | Barbados | IOs headquarters | 17 | IGOs + NGOs | 0.26% | 2000 | YIO (2002) | 57 | |
| 16 | Belarus | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 150 | |
| 17 | Belgium | IOs headquarters | 796 | IGOs + NGOs | 12.18% | 1 | 2000 | YIO (2002) | 151 |
| 18 | Belize | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 58 | |
| 19 | Benin | IOs headquarters | 5 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 3 | |
| 20 | Bhutan | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 92 | ||
| 21 | Bolivia | IOs headquarters | 5 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 59 | |
| 22 | Bosnia and Herzegovina | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 152 | |
| 23 | Botswana | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 4 | |
| 24 | Brazil | IOs headquarters | 47 | IGOs + NGOs | 0.72% | 22 | 2000 | YIO (2002) | 60 |
| 25 | Brunei | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 93 | |
| 26 | Bulgaria | IOs headquarters | 10 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 153 | |
| 27 | Burkina Faso | IOs headquarters | 11 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 5 | |
| 28 | Burundi | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 6 | |
| 29 | Cambodia | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 94 | |
| 30 | Cameroon | IOs headquarters | 12 | IGOs + NGOs | 0.18% | 2000 | YIO (2002) | 7 | |
| 31 | Canada | IOs headquarters | 148 | IGOs + NGOs | 2.27% | 10 | 2000 | YIO (2002) | 61 |
| 32 | Cape Verde | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 8 | ||
| 33 | Central African Republic | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 9 | |
| 34 | Chad | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 10 | |
| 35 | Chile | IOs headquarters | 26 | IGOs + NGOs | 0.40% | 2000 | YIO (2002) | 62 | |
| 36 | China | IOs headquarters | 11 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 95 | |
| 37 | Colombia | IOs headquarters | 20 | IGOs + NGOs | 0.31% | 2000 | YIO (2002) | 63 | |
| 38 | Comoros | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 11 | ||
| 39 | Congo (Brazzaville) | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 12 | |
| 40 | Congo (Kinshasa) | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 13 | |
| 41 | Costa Rica | IOs headquarters | 26 | IGOs + NGOs | 0.40% | 2000 | YIO (2002) | 64 | |
| 42 | Côte d'Ivoire | IOs headquarters | 18 | IGOs + NGOs | 0.28% | 2000 | YIO (2002) | 14 | |
| 43 | Croatia | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 154 | |
| 44 | Cuba | IOs headquarters | 11 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 65 | |
| 45 | Cyprus | IOs headquarters | 7 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 155 | |
| 46 | Czech Republic | IOs headquarters | 19 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 156 | |
| 47 | Denmark | IOs headquarters | 127 | IGOs + NGOs | 1.94% | 11 | 2000 | YIO (2002) | 157 |
| 48 | Djibouti | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 15 | |
| 49 | Dominica | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 66 | |
| 50 | Dominican Republic | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 67 | |
| 51 | East Timor | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 96 | ||
| 52 | Ecuador | IOs headquarters | 14 | IGOs + NGOs | 0.21% | 2000 | YIO (2002) | 68 | |
| 53 | Egypt | IOs headquarters | 52 | IGOs + NGOs | 0.80% | 21 | 2000 | YIO (2002) | 16 |
| 54 | El Salvador | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 69 | |
| 55 | Equatorial Guinea | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 17 | ||
| 56 | Eritrea | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 18 | ||
| 57 | Estonia | IOs headquarters | 5 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 158 | |
| 58 | Ethiopia | IOs headquarters | 6 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 19 | |
| 59 | Fiji Islands | IOs headquarters | 15 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 132 | |
| 60 | Finland | IOs headquarters | 76 | IGOs + NGOs | 1.16% | 18 | 2000 | YIO (2002) | 159 |
| 61 | France | IOs headquarters | 574 | IGOs + NGOs | 8.78% | 4 | 2000 | YIO (2002) | 160 |
| 62 | Gabon | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 20 | |
| 63 | Gambia | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 21 | |
| 64 | Georgia | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 161 | |
| 65 | Germany | IOs headquarters | 388 | IGOs + NGOs | 5.94% | 5 | 2000 | YIO (2002) | 162 |
| 66 | Ghana | IOs headquarters | 15 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 22 | |
| 67 | Greece | IOs headquarters | 28 | IGOs + NGOs | 0.43% | 2000 | YIO (2002) | 163 | |
| 68 | Grenada | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 70 | ||
| 69 | Guatemala | IOs headquarters | 7 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 71 | |
| 70 | Guinea | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 23 | |
| 71 | Guinea-Bissau | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 24 | ||
| 72 | Guyana | IOs headquarters | 6 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 72 | |
| 73 | Haiti | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 73 | ||
| 74 | Honduras | IOs headquarters | 8 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 74 | |
| 75 | Hungary | IOs headquarters | 25 | IGOs + NGOs | 0.38% | 2000 | YIO (2002) | 164 | |
| 76 | Iceland | IOs headquarters | 7 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 165 | |
| 77 | India | IOs headquarters | 40 | IGOs + NGOs | 0.61% | 24 | 2000 | YIO (2002) | 97 |
| 78 | Indonesia | IOs headquarters | 10 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 98 | |
| 79 | Iran | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 99 | |
| 80 | Iraq | IOs headquarters | 12 | IGOs + NGOs | 0.18% | 2000 | YIO (2002) | 100 | |
| 81 | Ireland | IOs headquarters | 27 | IGOs + NGOs | 0.41% | 2000 | YIO (2002) | 166 | |
| 82 | Israel | IOs headquarters | 23 | IGOs + NGOs | 0.35% | 2000 | YIO (2002) | 101 | |
| 83 | Italy | IOs headquarters | 172 | IGOs + NGOs | 2.63% | 8 | 2000 | YIO (2002) | 167 |
| 84 | Jamaica | IOs headquarters | 9 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 75 | |
| 85 | Japan | IOs headquarters | 92 | IGOs + NGOs | 1.41% | 15 | 2000 | YIO (2002) | 102 |
| 86 | Jordan | IOs headquarters | 12 | IGOs + NGOs | 0.18% | 2000 | YIO (2002) | 103 | |
| 87 | Kazakhstan | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 104 | |
| 88 | Kenya | IOs headquarters | 35 | IGOs + NGOs | 0.54% | 2000 | YIO (2002) | 25 | |
| 89 | Kiribati | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 133 | ||
| 90 | Korea, North | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 105 | ||
| 91 | Korea, South | IOs headquarters | 21 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 106 | |
| 92 | Kuwait | IOs headquarters | 5 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 107 | |
| 93 | Kyrgyzstan | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 108 | |
| 94 | Laos | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 109 | |
| 95 | Latvia | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 168 | |
| 96 | Lebanon | IOs headquarters | 10 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 110 | |
| 97 | Lesotho | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 26 | |
| 98 | Liberia | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 27 | ||
| 99 | Libya | IOs headquarters | 7 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 28 | |
| 100 | Liechtenstein | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 169 | |
| 101 | Lithuania | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 170 | |
| 102 | Luxembourg | IOs headquarters | 17 | IGOs + NGOs | 0.26% | 2000 | YIO (2002) | 171 | |
| 103 | Macedonia | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 172 | |
| 104 | Madagascar | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 29 | |
| 105 | Malawi | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 30 | |
| 106 | Malaysia | IOs headquarters | 38 | IGOs + NGOs | 0.58% | 2000 | YIO (2002) | 111 | |
| 107 | Maldives | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 112 | ||
| 108 | Mali | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 31 | |
| 109 | Malta | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 173 | |
| 110 | Marshall Islands | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 134 | ||
| 111 | Mauritania | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 32 | |
| 112 | Mauritius | IOs headquarters | 9 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 33 | |
| 113 | Mexico | IOs headquarters | 59 | IGOs + NGOs | 0.90% | 19 | 2000 | YIO (2002) | 76 |
| 114 | Micronesia, Federated States of | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 135 | |
| 115 | Moldova | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 174 | |
| 116 | Monaco | IOs headquarters | 10 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 175 | |
| 117 | Mongolia | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 113 | |
| 118 | Morocco | IOs headquarters | 13 | IGOs + NGOs | 0.20% | 2000 | YIO (2002) | 34 | |
| 119 | Mozambique | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 35 | |
| 120 | Myanmar | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 114 | ||
| 121 | Namibia | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 36 | |
| 122 | Nauru | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 136 | |
| 123 | Nepal | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 115 | |
| 124 | Netherlands | IOs headquarters | 346 | IGOs + NGOs | 5.30% | 6 | 2000 | YIO (2002) | 176 |
| 125 | New Zealand | IOs headquarters | 21 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 137 | |
| 126 | Nicaragua | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 77 | |
| 127 | Niger | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 37 | |
| 128 | Nigeria | IOs headquarters | 20 | IGOs + NGOs | 0.31% | 2000 | YIO (2002) | 38 | |
| 129 | Norway | IOs headquarters | 80 | IGOs + NGOs | 1.22% | 16 | 2000 | YIO (2002) | 177 |
| 130 | Oman | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 116 | |
| 131 | Pakistan | IOs headquarters | 6 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 117 | |
| 132 | Palau | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 138 | ||
| 133 | Panama | IOs headquarters | 9 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 78 | |
| 134 | Papua New Guinea | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 139 | |
| 135 | Paraguay | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 79 | |
| 136 | Peru | IOs headquarters | 19 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 80 | |
| 137 | Philippines | IOs headquarters | 40 | IGOs + NGOs | 0.61% | 25 | 2000 | YIO (2002) | 118 |
| 138 | Poland | IOs headquarters | 19 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 178 | |
| 139 | Portugal | IOs headquarters | 21 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 179 | |
| 140 | Qatar | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 119 | |
| 141 | Romania | IOs headquarters | 5 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 180 | |
| 142 | Russia | IOs headquarters | 21 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 181 | |
| 143 | Rwanda | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 39 | |
| 144 | Saint Kitts and Nevis | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 81 | |
| 145 | Saint Lucia | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 82 | |
| 146 | Saint Vincent and the Grenadines | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 83 | |
| 147 | Samoa | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 140 | |
| 148 | San Marino | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 182 | |
| 149 | Sao Tome and Principe | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 40 | ||
| 150 | Saudi Arabia | IOs headquarters | 21 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 120 | |
| 151 | Senegal | IOs headquarters | 22 | IGOs + NGOs | 0.34% | 2000 | YIO (2002) | 41 | |
| 152 | Seychelles | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 42 | |
| 153 | Sierra Leone | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 43 | |
| 154 | Singapore | IOs headquarters | 41 | IGOs + NGOs | 0.63% | 23 | 2000 | YIO (2002) | 121 |
| 155 | Slovakia | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 183 | |
| 156 | Slovenia | IOs headquarters | 6 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 184 | |
| 157 | Solomon Islands | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 141 | |
| 158 | Somalia | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 44 | ||
| 159 | South Africa | IOs headquarters | 53 | IGOs + NGOs | 0.81% | 20 | 2000 | YIO (2002) | 45 |
| 160 | Spain | IOs headquarters | 114 | IGOs + NGOs | 1.74% | 13 | 2000 | YIO (2002) | 185 |
| 161 | Sri Lanka | IOs headquarters | 3 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 122 | |
| 162 | Sudan | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 46 | |
| 163 | Suriname | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 84 | ||
| 164 | Swaziland | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 47 | |
| 165 | Sweden | IOs headquarters | 169 | IGOs + NGOs | 2.59% | 9 | 2000 | YIO (2002) | 186 |
| 166 | Switzerland | IOs headquarters | 298 | IGOs + NGOs | 4.56% | 7 | 2000 | YIO (2002) | 187 |
| 167 | Syria | IOs headquarters | 9 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 123 | |
| 168 | Tajikistan | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 124 | ||
| 169 | Tanzania | IOs headquarters | 7 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 48 | |
| 170 | Thailand | IOs headquarters | 34 | IGOs + NGOs | 0.52% | 2000 | YIO (2002) | 125 | |
| 171 | Togo | IOs headquarters | 6 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 49 | |
| 172 | Tonga | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 142 | |
| 173 | Trinidad and Tobago | IOs headquarters | 18 | IGOs + NGOs | 0.28% | 2000 | YIO (2002) | 85 | |
| 174 | Tunisia | IOs headquarters | 15 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 50 | |
| 175 | Turkey | IOs headquarters | 16 | IGOs + NGOs | 0.24% | 2000 | YIO (2002) | 188 | |
| 176 | Turkmenistan | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 126 | ||
| 177 | Tuvalu | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 143 | ||
| 178 | Uganda | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 51 | |
| 179 | Ukraine | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 189 | |
| 180 | United Arab Emirates (UAE) | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 127 | |
| 181 | United Kingdom (UK) | IOs headquarters | 745 | IGOs + NGOs | 11.40% | 2 | 2000 | YIO (2002) | 190 |
| 182 | United States of America (USA) | IOs headquarters | 629 | IGOs + NGOs | 9.63% | 3 | 2000 | YIO (2002) | 86 |
| 183 | Uruguay | IOs headquarters | 30 | IGOs + NGOs | 0.46% | 2000 | YIO (2002) | 87 | |
| 184 | Uzbekistan | IOs headquarters | 1 | IGOs + NGOs | 0.02% | 2000 | YIO (2002) | 128 | |
| 185 | Vanuatu | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 144 | |
| 186 | Vatican | IOs headquarters | 4 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 191 | |
| 187 | Venezuela | IOs headquarters | 29 | IGOs + NGOs | 0.44% | 2000 | YIO (2002) | 88 | |
| 188 | Vietnam | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 129 | |
| 189 | Yemen | IOs headquarters | na | IGOs + NGOs | 2000 | YIO (2002) | 130 | ||
| 190 | Yugoslavia | IOs headquarters | 0 | IGOs + NGOs | 0.00% | 2000 | YIO (2002) | 192 | |
| 191 | Zambia | IOs headquarters | 2 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 52 | |
| 192 | Zimbabwe | IOs headquarters | 11 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 53 | |
| 193 | World | IOs headquarters | 6 534 | IGOs + NGOs | 100.00% | 2000 | YIO (2002) | 193 |