| sa | Saudi Arabia |
| sb | Solomon Islands |
| sc | Seychelles |
| sd | Sudan |
| se | Sweden |
| sg | Singapore |
| sh | Saint Helena |
| si | Slovenia |
| sj | Svalbard and Jan Mayen Islands |
| sk | Slovak Republic |
| sl | Sierra Leone |
| sm | San Marino |
| sn | Senegal |
| so | Somalia |
| sr | Suriname |
| st | Sao Tome and Principe |
| su | USSR (former) |
| sv | El Salvador |
| sy | Syria |
| sz | Swaziland |
| tc | Turks and Caicos Islands |
| td | Chad |
| tf | French Southern Territories |
| tg | Togo |
| th | Thailand |
| tj | Tajikistan |
| tk | Tokelau |
| tm | Turkmenistan |
| tn | Tunisia |
| to | Tonga |
| tp | East Timor |
| tr | Turkey |
| tt | Trinidad and Tobago |
| tv | Tuvalu |
| tw | Taiwan |
| tz | Tanzania |
| ua | Ukraine |
| ug | Uganda |
| uk | United Kingdom |
| um | US Minor Outlying Islands |
| us | United States |
| uy | Uruguay |
| uz | Uzbekistan |
| va | Vatican City State |
| vc | Saint Vincent and the Grenadines |
| ve | Venezuela |
| vg | Virgin Islands (British) |
| vi | Virgin Islands (US) |
| vn | Viet Nam |
| vu | Vanuatu |
| wf | Wallis and Futuna Islands |
| ws | Samoa |
| ye | Yemen |
| yt | Mayotte |
| yu | Yugoslavia |
| za | South Africa |
| zm | Zambia |
| zr | Zaire |
| zw | Zimbabwe |
