| Code | Country | Variable | www.Worldata.org ® © | Unit | Share | Rank | Year | Source | Key |
| 1 | Afghanistan | IOs membership | 92 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 89 | |
| 2 | Albania | IOs membership | 465 | IGOs + NGOs | 0.27% | 2000 | YIO (2002) | 145 | |
| 3 | Algeria | IOs membership | 743 | IGOs + NGOs | 0.44% | 2000 | YIO (2002) | 1 | |
| 4 | Andorra | IOs membership | 187 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 146 | |
| 5 | Angola | IOs membership | 270 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 2 | |
| 6 | Antigua and Barbuda | IOs membership | 207 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 54 | |
| 7 | Argentina | IOs membership | 1 832 | IGOs + NGOs | 1.07% | 2000 | YIO (2002) | 55 | |
| 8 | Armenia | IOs membership | 349 | IGOs + NGOs | 0.20% | 2000 | YIO (2002) | 147 | |
| 9 | Australia | IOs membership | 2 357 | IGOs + NGOs | 1.38% | 17 | 2000 | YIO (2002) | 131 |
| 10 | Austria | IOs membership | 2 878 | IGOs + NGOs | 1.69% | 13 | 2000 | YIO (2002) | 148 |
| 11 | Azerbaijan | IOs membership | 276 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 149 | |
| 12 | Bahamas | IOs membership | 301 | IGOs + NGOs | 0.18% | 2000 | YIO (2002) | 56 | |
| 13 | Bahrain | IOs membership | 353 | IGOs + NGOs | 0.21% | 2000 | YIO (2002) | 90 | |
| 14 | Bangladesh | IOs membership | 660 | IGOs + NGOs | 0.39% | 2000 | YIO (2002) | 91 | |
| 15 | Barbados | IOs membership | 392 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 57 | |
| 16 | Belarus | IOs membership | 512 | IGOs + NGOs | 0.30% | 2000 | YIO (2002) | 150 | |
| 17 | Belgium | IOs membership | 3 405 | IGOs + NGOs | 2.00% | 6 | 2000 | YIO (2002) | 151 |
| 18 | Belize | IOs membership | 248 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 58 | |
| 19 | Benin | IOs membership | 425 | IGOs + NGOs | 0.25% | 2000 | YIO (2002) | 3 | |
| 20 | Bhutan | IOs membership | 86 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 92 | |
| 21 | Bolivia | IOs membership | 733 | IGOs + NGOs | 0.43% | 2000 | YIO (2002) | 59 | |
| 22 | Bosnia and Herzegovina | IOs membership | 368 | IGOs + NGOs | 0.22% | 2000 | YIO (2002) | 152 | |
| 23 | Botswana | IOs membership | 401 | IGOs + NGOs | 0.24% | 2000 | YIO (2002) | 4 | |
| 24 | Brazil | IOs membership | 2 006 | IGOs + NGOs | 1.18% | 24 | 2000 | YIO (2002) | 60 |
| 25 | Brunei | IOs membership | 214 | IGOs + NGOs | 0.13% | 2000 | YIO (2002) | 93 | |
| 26 | Bulgaria | IOs membership | 1 424 | IGOs + NGOs | 0.83% | 2000 | YIO (2002) | 153 | |
| 27 | Burkina Faso | IOs membership | 394 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 5 | |
| 28 | Burundi | IOs membership | 268 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 6 | |
| 29 | Cambodia | IOs membership | 167 | IGOs + NGOs | 0.10% | 2000 | YIO (2002) | 94 | |
| 30 | Cameroon | IOs membership | 625 | IGOs + NGOs | 0.37% | 2000 | YIO (2002) | 7 | |
| 31 | Canada | IOs membership | 2 524 | IGOs + NGOs | 1.48% | 15 | 2000 | YIO (2002) | 61 |
| 32 | Cape Verde | IOs membership | 150 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 8 | |
| 33 | Central African Republic | IOs membership | 242 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 9 | |
| 34 | Chad | IOs membership | 241 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 10 | |
| 35 | Chile | IOs membership | 1 394 | IGOs + NGOs | 0.82% | 2000 | YIO (2002) | 62 | |
| 36 | China | IOs membership | 1 415 | IGOs + NGOs | 0.83% | 2000 | YIO (2002) | 95 | |
| 37 | Colombia | IOs membership | 1 237 | IGOs + NGOs | 0.73% | 2000 | YIO (2002) | 63 | |
| 38 | Comoros | IOs membership | 110 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 11 | |
| 39 | Congo (Brazzaville) | IOs membership | 345 | IGOs + NGOs | 0.20% | 2000 | YIO (2002) | 12 | |
| 40 | Congo (Kinshasa) | IOs membership | 525 | IGOs + NGOs | 0.31% | 2000 | YIO (2002) | 13 | |
| 41 | Costa Rica | IOs membership | 856 | IGOs + NGOs | 0.50% | 2000 | YIO (2002) | 64 | |
| 42 | Côte d'Ivoire | IOs membership | 620 | IGOs + NGOs | 0.36% | 2000 | YIO (2002) | 14 | |
| 43 | Croatia | IOs membership | 1 294 | IGOs + NGOs | 0.76% | 2000 | YIO (2002) | 154 | |
| 44 | Cuba | IOs membership | 745 | IGOs + NGOs | 0.44% | 2000 | YIO (2002) | 65 | |
| 45 | Cyprus | IOs membership | 879 | IGOs + NGOs | 0.52% | 2000 | YIO (2002) | 155 | |
| 46 | Czech Republic | IOs membership | 2 075 | IGOs + NGOs | 1.22% | 23 | 2000 | YIO (2002) | 156 |
| 47 | Denmark | IOs membership | 3 032 | IGOs + NGOs | 1.78% | 10 | 2000 | YIO (2002) | 157 |
| 48 | Djibouti | IOs membership | 153 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 15 | |
| 49 | Dominica | IOs membership | 203 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 66 | |
| 50 | Dominican Republic | IOs membership | 593 | IGOs + NGOs | 0.35% | 2000 | YIO (2002) | 67 | |
| 51 | East Timor | IOs membership | 12 | IGOs + NGOs | 0.01% | 2000 | YIO (2002) | 96 | |
| 52 | Ecuador | IOs membership | 828 | IGOs + NGOs | 0.49% | 2000 | YIO (2002) | 68 | |
| 53 | Egypt | IOs membership | 1 289 | IGOs + NGOs | 0.76% | 2000 | YIO (2002) | 16 | |
| 54 | El Salvador | IOs membership | 527 | IGOs + NGOs | 0.31% | 2000 | YIO (2002) | 69 | |
| 55 | Equatorial Guinea | IOs membership | 108 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 17 | |
| 56 | Eritrea | IOs membership | 107 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 18 | |
| 57 | Estonia | IOs membership | 1 002 | IGOs + NGOs | 0.59% | 2000 | YIO (2002) | 158 | |
| 58 | Ethiopia | IOs membership | 412 | IGOs + NGOs | 0.24% | 2000 | YIO (2002) | 19 | |
| 59 | Fiji Islands | IOs membership | 385 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 132 | |
| 60 | Finland | IOs membership | 2 887 | IGOs + NGOs | 1.69% | 12 | 2000 | YIO (2002) | 159 |
| 61 | France | IOs membership | 3 839 | IGOs + NGOs | 2.25% | 1 | 2000 | YIO (2002) | 160 |
| 62 | Gabon | IOs membership | 339 | IGOs + NGOs | 0.20% | 2000 | YIO (2002) | 20 | |
| 63 | Gambia | IOs membership | 277 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 21 | |
| 64 | Georgia | IOs membership | 453 | IGOs + NGOs | 0.27% | 2000 | YIO (2002) | 161 | |
| 65 | Germany | IOs membership | 3 789 | IGOs + NGOs | 2.22% | 2 | 2000 | YIO (2002) | 162 |
| 66 | Ghana | IOs membership | 693 | IGOs + NGOs | 0.41% | 2000 | YIO (2002) | 22 | |
| 67 | Greece | IOs membership | 2 308 | IGOs + NGOs | 1.35% | 18 | 2000 | YIO (2002) | 163 |
| 68 | Grenada | IOs membership | 196 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 70 | |
| 69 | Guatemala | IOs membership | 650 | IGOs + NGOs | 0.38% | 2000 | YIO (2002) | 71 | |
| 70 | Guinea | IOs membership | 287 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 23 | |
| 71 | Guinea-Bissau | IOs membership | 146 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 24 | |
| 72 | Guyana | IOs membership | 321 | IGOs + NGOs | 0.19% | 2000 | YIO (2002) | 72 | |
| 73 | Haiti | IOs membership | 352 | IGOs + NGOs | 0.21% | 2000 | YIO (2002) | 73 | |
| 74 | Honduras | IOs membership | 503 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 74 | |
| 75 | Hungary | IOs membership | 2 240 | IGOs + NGOs | 1.31% | 21 | 2000 | YIO (2002) | 164 |
| 76 | Iceland | IOs membership | 1 160 | IGOs + NGOs | 0.68% | 2000 | YIO (2002) | 165 | |
| 77 | India | IOs membership | 1 863 | IGOs + NGOs | 1.09% | 2000 | YIO (2002) | 97 | |
| 78 | Indonesia | IOs membership | 1 137 | IGOs + NGOs | 0.67% | 2000 | YIO (2002) | 98 | |
| 79 | Iran | IOs membership | 691 | IGOs + NGOs | 0.41% | 2000 | YIO (2002) | 99 | |
| 80 | Iraq | IOs membership | 406 | IGOs + NGOs | 0.24% | 2000 | YIO (2002) | 100 | |
| 81 | Ireland | IOs membership | 2 140 | IGOs + NGOs | 1.25% | 22 | 2000 | YIO (2002) | 166 |
| 82 | Israel | IOs membership | 1 936 | IGOs + NGOs | 1.13% | 2000 | YIO (2002) | 101 | |
| 83 | Italy | IOs membership | 3 539 | IGOs + NGOs | 2.07% | 4 | 2000 | YIO (2002) | 167 |
| 84 | Jamaica | IOs membership | 542 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 75 | |
| 85 | Japan | IOs membership | 2 307 | IGOs + NGOs | 1.35% | 19 | 2000 | YIO (2002) | 102 |
| 86 | Jordan | IOs membership | 620 | IGOs + NGOs | 0.36% | 2000 | YIO (2002) | 103 | |
| 87 | Kazakhstan | IOs membership | 353 | IGOs + NGOs | 0.21% | 2000 | YIO (2002) | 104 | |
| 88 | Kenya | IOs membership | 873 | IGOs + NGOs | 0.51% | 2000 | YIO (2002) | 25 | |
| 89 | Kiribati | IOs membership | 112 | IGOs + NGOs | 0.07% | 2000 | YIO (2002) | 133 | |
| 90 | Korea, North | IOs membership | 199 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 105 | |
| 91 | Korea, South | IOs membership | 1 438 | IGOs + NGOs | 0.84% | 2000 | YIO (2002) | 106 | |
| 92 | Kuwait | IOs membership | 580 | IGOs + NGOs | 0.34% | 2000 | YIO (2002) | 107 | |
| 93 | Kyrgyzstan | IOs membership | 182 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 108 | |
| 94 | Laos | IOs membership | 134 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 109 | |
| 95 | Latvia | IOs membership | 867 | IGOs + NGOs | 0.51% | 2000 | YIO (2002) | 168 | |
| 96 | Lebanon | IOs membership | 662 | IGOs + NGOs | 0.39% | 2000 | YIO (2002) | 110 | |
| 97 | Lesotho | IOs membership | 297 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 26 | |
| 98 | Liberia | IOs membership | 276 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 27 | |
| 99 | Libya | IOs membership | 374 | IGOs + NGOs | 0.22% | 2000 | YIO (2002) | 28 | |
| 100 | Liechtenstein | IOs membership | 241 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 169 | |
| 101 | Lithuania | IOs membership | 951 | IGOs + NGOs | 0.56% | 2000 | YIO (2002) | 170 | |
| 102 | Luxembourg | IOs membership | 1 279 | IGOs + NGOs | 0.75% | 2000 | YIO (2002) | 171 | |
| 103 | Macedonia | IOs membership | 454 | IGOs + NGOs | 0.27% | 2000 | YIO (2002) | 172 | |
| 104 | Madagascar | IOs membership | 416 | IGOs + NGOs | 0.24% | 2000 | YIO (2002) | 29 | |
| 105 | Malawi | IOs membership | 368 | IGOs + NGOs | 0.22% | 2000 | YIO (2002) | 30 | |
| 106 | Malaysia | IOs membership | 1 181 | IGOs + NGOs | 0.69% | 2000 | YIO (2002) | 111 | |
| 107 | Maldives | IOs membership | 115 | IGOs + NGOs | 0.07% | 2000 | YIO (2002) | 112 | |
| 108 | Mali | IOs membership | 365 | IGOs + NGOs | 0.21% | 2000 | YIO (2002) | 31 | |
| 109 | Malta | IOs membership | 708 | IGOs + NGOs | 0.41% | 2000 | YIO (2002) | 173 | |
| 110 | Marshall Islands | IOs membership | 70 | IGOs + NGOs | 0.04% | 2000 | YIO (2002) | 134 | |
| 111 | Mauritania | IOs membership | 286 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 32 | |
| 112 | Mauritius | IOs membership | 500 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 33 | |
| 113 | Mexico | IOs membership | 1 700 | IGOs + NGOs | 1.00% | 2000 | YIO (2002) | 76 | |
| 114 | Micronesia, Federated States of | IOs membership | 71 | IGOs + NGOs | 0.04% | 2000 | YIO (2002) | 135 | |
| 115 | Moldova | IOs membership | 333 | IGOs + NGOs | 0.20% | 2000 | YIO (2002) | 174 | |
| 116 | Monaco | IOs membership | 320 | IGOs + NGOs | 0.19% | 2000 | YIO (2002) | 175 | |
| 117 | Mongolia | IOs membership | 278 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 113 | |
| 118 | Morocco | IOs membership | 916 | IGOs + NGOs | 0.54% | 2000 | YIO (2002) | 34 | |
| 119 | Mozambique | IOs membership | 366 | IGOs + NGOs | 0.21% | 2000 | YIO (2002) | 35 | |
| 120 | Myanmar | IOs membership | 231 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 114 | |
| 121 | Namibia | IOs membership | 397 | IGOs + NGOs | 0.23% | 2000 | YIO (2002) | 36 | |
| 122 | Nauru | IOs membership | 79 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 136 | |
| 123 | Nepal | IOs membership | 456 | IGOs + NGOs | 0.27% | 2000 | YIO (2002) | 115 | |
| 124 | Netherlands | IOs membership | 3 444 | IGOs + NGOs | 2.02% | 5 | 2000 | YIO (2002) | 176 |
| 125 | New Zealand | IOs membership | 1 601 | IGOs + NGOs | 0.94% | 2000 | YIO (2002) | 137 | |
| 126 | Nicaragua | IOs membership | 467 | IGOs + NGOs | 0.27% | 2000 | YIO (2002) | 77 | |
| 127 | Niger | IOs membership | 299 | IGOs + NGOs | 0.18% | 2000 | YIO (2002) | 37 | |
| 128 | Nigeria | IOs membership | 983 | IGOs + NGOs | 0.58% | 2000 | YIO (2002) | 38 | |
| 129 | Norway | IOs membership | 2 777 | IGOs + NGOs | 1.63% | 14 | 2000 | YIO (2002) | 177 |
| 130 | Oman | IOs membership | 299 | IGOs + NGOs | 0.18% | 2000 | YIO (2002) | 116 | |
| 131 | Pakistan | IOs membership | 958 | IGOs + NGOs | 0.56% | 2000 | YIO (2002) | 117 | |
| 132 | Palau | IOs membership | 58 | IGOs + NGOs | 0.03% | 2000 | YIO (2002) | 138 | |
| 133 | Panama | IOs membership | 665 | IGOs + NGOs | 0.39% | 2000 | YIO (2002) | 78 | |
| 134 | Papua New Guinea | IOs membership | 435 | IGOs + NGOs | 0.25% | 2000 | YIO (2002) | 139 | |
| 135 | Paraguay | IOs membership | 637 | IGOs + NGOs | 0.37% | 2000 | YIO (2002) | 79 | |
| 136 | Peru | IOs membership | 1 109 | IGOs + NGOs | 0.65% | 2000 | YIO (2002) | 80 | |
| 137 | Philippines | IOs membership | 1 164 | IGOs + NGOs | 0.68% | 2000 | YIO (2002) | 118 | |
| 138 | Poland | IOs membership | 2 265 | IGOs + NGOs | 1.33% | 20 | 2000 | YIO (2002) | 178 |
| 139 | Portugal | IOs membership | 2 509 | IGOs + NGOs | 1.47% | 16 | 2000 | YIO (2002) | 179 |
| 140 | Qatar | IOs membership | 287 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 119 | |
| 141 | Romania | IOs membership | 1 539 | IGOs + NGOs | 0.90% | 2000 | YIO (2002) | 180 | |
| 142 | Russia | IOs membership | 1 964 | IGOs + NGOs | 1.15% | 25 | 2000 | YIO (2002) | 181 |
| 143 | Rwanda | IOs membership | 278 | IGOs + NGOs | 0.16% | 2000 | YIO (2002) | 39 | |
| 144 | Saint Kitts and Nevis | IOs membership | 166 | IGOs + NGOs | 0.10% | 2000 | YIO (2002) | 81 | |
| 145 | Saint Lucia | IOs membership | 222 | IGOs + NGOs | 0.13% | 2000 | YIO (2002) | 82 | |
| 146 | Saint Vincent and the Grenadines | IOs membership | 189 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 83 | |
| 147 | Samoa | IOs membership | 197 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 140 | |
| 148 | San Marino | IOs membership | 142 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 182 | |
| 149 | Sao Tome and Principe | IOs membership | 87 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 40 | |
| 150 | Saudi Arabia | IOs membership | 766 | IGOs + NGOs | 0.45% | 2000 | YIO (2002) | 120 | |
| 151 | Senegal | IOs membership | 625 | IGOs + NGOs | 0.37% | 2000 | YIO (2002) | 41 | |
| 152 | Seychelles | IOs membership | 212 | IGOs + NGOs | 0.12% | 2000 | YIO (2002) | 42 | |
| 153 | Sierra Leone | IOs membership | 369 | IGOs + NGOs | 0.22% | 2000 | YIO (2002) | 43 | |
| 154 | Singapore | IOs membership | 1 148 | IGOs + NGOs | 0.67% | 2000 | YIO (2002) | 121 | |
| 155 | Slovakia | IOs membership | 1 389 | IGOs + NGOs | 0.81% | 2000 | YIO (2002) | 183 | |
| 156 | Slovenia | IOs membership | 1 348 | IGOs + NGOs | 0.79% | 2000 | YIO (2002) | 184 | |
| 157 | Solomon Islands | IOs membership | 177 | IGOs + NGOs | 0.10% | 2000 | YIO (2002) | 141 | |
| 158 | Somalia | IOs membership | 158 | IGOs + NGOs | 0.09% | 2000 | YIO (2002) | 44 | |
| 159 | South Africa | IOs membership | 1 723 | IGOs + NGOs | 1.01% | 2000 | YIO (2002) | 45 | |
| 160 | Spain | IOs membership | 3 388 | IGOs + NGOs | 1.99% | 7 | 2000 | YIO (2002) | 185 |
| 161 | Sri Lanka | IOs membership | 766 | IGOs + NGOs | 0.45% | 2000 | YIO (2002) | 122 | |
| 162 | Sudan | IOs membership | 487 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 46 | |
| 163 | Suriname | IOs membership | 237 | IGOs + NGOs | 0.14% | 2000 | YIO (2002) | 84 | |
| 164 | Swaziland | IOs membership | 291 | IGOs + NGOs | 0.17% | 2000 | YIO (2002) | 47 | |
| 165 | Sweden | IOs membership | 3 226 | IGOs + NGOs | 1.89% | 8 | 2000 | YIO (2002) | 186 |
| 166 | Switzerland | IOs membership | 3 209 | IGOs + NGOs | 1.88% | 9 | 2000 | YIO (2002) | 187 |
| 167 | Syria | IOs membership | 426 | IGOs + NGOs | 0.25% | 2000 | YIO (2002) | 123 | |
| 168 | Tajikistan | IOs membership | 126 | IGOs + NGOs | 0.07% | 2000 | YIO (2002) | 124 | |
| 169 | Tanzania | IOs membership | 616 | IGOs + NGOs | 0.36% | 2000 | YIO (2002) | 48 | |
| 170 | Thailand | IOs membership | 1 134 | IGOs + NGOs | 0.66% | 2000 | YIO (2002) | 125 | |
| 171 | Togo | IOs membership | 402 | IGOs + NGOs | 0.24% | 2000 | YIO (2002) | 49 | |
| 172 | Tonga | IOs membership | 173 | IGOs + NGOs | 0.10% | 2000 | YIO (2002) | 142 | |
| 173 | Trinidad and Tobago | IOs membership | 517 | IGOs + NGOs | 0.30% | 2000 | YIO (2002) | 85 | |
| 174 | Tunisia | IOs membership | 848 | IGOs + NGOs | 0.50% | 2000 | YIO (2002) | 50 | |
| 175 | Turkey | IOs membership | 1 577 | IGOs + NGOs | 0.92% | 2000 | YIO (2002) | 188 | |
| 176 | Turkmenistan | IOs membership | 134 | IGOs + NGOs | 0.08% | 2000 | YIO (2002) | 126 | |
| 177 | Tuvalu | IOs membership | 78 | IGOs + NGOs | 0.05% | 2000 | YIO (2002) | 143 | |
| 178 | Uganda | IOs membership | 550 | IGOs + NGOs | 0.32% | 2000 | YIO (2002) | 51 | |
| 179 | Ukraine | IOs membership | 1 012 | IGOs + NGOs | 0.59% | 2000 | YIO (2002) | 189 | |
| 180 | United Arab Emirates (UAE) | IOs membership | 531 | IGOs + NGOs | 0.31% | 2000 | YIO (2002) | 127 | |
| 181 | United Kingdom (UK) | IOs membership | 3 670 | IGOs + NGOs | 2.15% | 3 | 2000 | YIO (2002) | 190 |
| 182 | United States of America (USA) | IOs membership | 2 920 | IGOs + NGOs | 1.71% | 11 | 2000 | YIO (2002) | 86 |
| 183 | Uruguay | IOs membership | 1 028 | IGOs + NGOs | 0.60% | 2000 | YIO (2002) | 87 | |
| 184 | Uzbekistan | IOs membership | 258 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 128 | |
| 185 | Vanuatu | IOs membership | 183 | IGOs + NGOs | 0.11% | 2000 | YIO (2002) | 144 | |
| 186 | Vatican | IOs membership | 94 | IGOs + NGOs | 0.06% | 2000 | YIO (2002) | 191 | |
| 187 | Venezuela | IOs membership | 1 223 | IGOs + NGOs | 0.72% | 2000 | YIO (2002) | 88 | |
| 188 | Vietnam | IOs membership | 503 | IGOs + NGOs | 0.29% | 2000 | YIO (2002) | 129 | |
| 189 | Yemen | IOs membership | 262 | IGOs + NGOs | 0.15% | 2000 | YIO (2002) | 130 | |
| 190 | Yugoslavia | IOs membership | 1 056 | IGOs + NGOs | 0.62% | 2000 | YIO (2002) | 192 | |
| 191 | Zambia | IOs membership | 531 | IGOs + NGOs | 0.31% | 2000 | YIO (2002) | 52 | |
| 192 | Zimbabwe | IOs membership | 766 | IGOs + NGOs | 0.45% | 2000 | YIO (2002) | 53 | |
| 193 | World | IOs membership | 170 604 | IGOs + NGOs | 100.00% | 2000 | YIO (2002) | 193 |