| Country | Region | Contracting Party | |
|---|---|---|---|
| 181 | Uganda | Africa | Yes |
| 182 | Ukraine | Europe | No |
| 183 | United Arab Emirates | Near East | Yes |
| 184 | United Kingdom of Great Britain and Northern Ireland | Europe | Yes |
| 185 | United Republic of Tanzania | Africa | Yes |
| 186 | United States of America | North America | Yes |
| 187 | Uruguay | Latin America and the Caribbean | Yes |
| 188 | Uzbekistan | Asia | No |
| 189 | Vanuatu | South West Pacific | No |
| 190 | Venezuela (Bolivarian Republic of) | Latin America and the Caribbean | Yes |
| 191 | Viet Nam | Asia | No |
| 192 | Yemen | Near East | Yes |
| 193 | Zambia | Africa | Yes |
| 194 | Zimbabwe | Africa | Yes |
| 195 | European Union (Member Organization) | Europe | Yes |