| Country | Region | Contracting Party | |
|---|---|---|---|
| 141 | Republic of Korea | Asia | Yes |
| 142 | Republic of Moldova | Europe | Yes |
| 143 | Romania | Europe | Yes |
| 144 | Russian Federation | Europe | No |
| 145 | Rwanda | Africa | Yes |
| 146 | Saint Kitts and Nevis | Latin America and the Caribbean | No |
| 147 | Saint Lucia | Latin America and the Caribbean | Yes |
| 148 | Saint Vincent and the Grenadines | Latin America and the Caribbean | No |
| 149 | Samoa | South West Pacific | Yes |
| 150 | San Marino | Europe | No |
| 151 | Sao Tome and Principe | Africa | Yes |
| 152 | Saudi Arabia | Near East | Yes |
| 153 | Senegal | Africa | Yes |
| 154 | Serbia | Europe | Yes |
| 155 | Seychelles | Africa | Yes |
| 156 | Sierra Leone | Africa | Yes |
| 157 | Singapore | Asia | No |
| 158 | Slovakia | Europe | Yes |
| 159 | Slovenia | Europe | Yes |
| 160 | Solomon Islands | South West Pacific | No |