| 🇸🇨 | flag: Seychelles | flag |
| 🇸🇩 | flag: Sudan | flag |
| 🇸🇪 | flag: Sweden | flag |
| 🇸🇬 | flag: Singapore | flag |
| 🇸🇭 | flag: St. Helena | flag |
| 🇸🇮 | flag: Slovenia | flag |
| 🇸🇯 | flag: Svalbard & Jan Mayen | flag |
| 🇸🇰 | flag: Slovakia | flag |
| 🇸🇱 | flag: Sierra Leone | flag |
| 🇸🇲 | flag: San Marino | flag |
| 🇸🇳 | flag: Senegal | flag |
| 🇸🇴 | flag: Somalia | flag |
| 🇸🇷 | flag: Suriname | flag |
| 🇸🇸 | flag: South Sudan | flag |
| 🇸🇹 | flag: São Tomé & Príncipe | flag |
| 🇸🇻 | flag: El Salvador | flag |
| 🇸🇽 | flag: Sint Maarten | flag |
| 🇸🇾 | flag: Syria | flag |
| 🇸🇿 | flag: Eswatini | flag |
| 🇹🇦 | flag: Tristan da Cunha | flag |