| S | |
| ST HELENA | 00 290 |
| ST KITTS AND NEVIS | 00 1 869 |
| ST LUCIA | 00 1 758 |
| ST PIERRE AND MIQUELON | 00 508 |
| ST VINCENT AND THE GRENADINES | 00 1 809 |
| SAIPAN | (Please see Northern Marianas) |
| SAMOA (USA) | 00 684 |
| SAMOA (Western) | 00 685 |
| SAN MARINO | 00 378 |
| SAO TOME AND PRINCIPE | 00 239 |
| SAUDI ARABIA | 00 966 |
| SENEGAL | 00 221 |
| SEYCHELLES | 00 248 |
| SIERRA LEONE | 00 232 |
| SINGAPORE | 00 65 |
| SLOVAKIA | 00 421 |
| SLOVENIA | 00 386 |
| SOLOMON ISLANDS | 00 677 |
| SOMALIA | 00 252 |
| SOUTH AFRICA | 00 27 |
| SOUTH KOREA | 00 82 |
| SAO TOME AND PRINCIPE | 00 239 |
| SPAIN | 00 34 |
| SRI LANKA | 00 94 |
| SUDAN | 00 249 |
| SURINAME | 00 597 |
| SWAZILAND | 00 268 |
| SWEDEN | 00 46 |
| SWITZERLAND | 00 41 |
| SYRIA | 00 963 |