| 8 characters | 12 characters | ALPHA-2 | ALPHA-3 | ||
| 634 | Qatar | QATAR | QATAR | QA | QAT |
| 638 | Réunion | REUNION | REUNION | RE | REU |
| 642 | Romania | ROMANIA | ROMANIA | RO | ROM |
| 646 | Rwanda | RWANDA | RWANDA | RW | RWA |
| 654 | St. Helena | ST.HELEN | ST.HELENA | SH | SHN |
| 658 | St. Kitts-Nevis-Anguilla | ST.KITTS | ST. KITTS NEV | KN | KNA |
| 662 | St. Lucia | ST.LUCIA | ST.LUCIA | LC | LCA |
| 666 | St. Pierre and Miquelon | ST.P.MIQ | ST.PIER.MIQU | PM | SPM |
| 670 | St. Vincent | ST. VINCT | ST. VINCENT | VC | VCT |
| 674 | San Marino | SAN MRNO | SAN MARINO | SM | SMR |
| 678 | São Tomé and Príncipe | S.TM. PRN | SAO TOME PRN | ST | STP |
| 682 | Saudi Arabia | SAUD.ARB | SAUDI ARABIA | SA | SAU |
| 686 | Senegal | SENEGAL | SENEGAL | SN | SEN |
| 690 | Seychelles | SEYCHLLS | SEYCHELLES | SC | SYC |
| 694 | Sierra Leone | SIER LNE | SIERRA LEONE | SL | SLE |
| 702 | Singapore | SINGAPOR | SINGAPORE | SG | SGP |
| 706 | Somalia | SOMALIA | SOMALIA | SO | SOM |
| 710[1] | South Africa | S.AFRICA | SOUTH AFRICA | ZA | ZAF |
| 868 | South Viet-Nam, Republic of | S.VIET.R | S.VIETNAM RP | VN | VNM |
| 716 | Southern Rhodesia | S.RHODSA | SOUTH.RHODSA | RH | RHO |
| 724[1] | Spain | SPAIN | SPAIN | ES | ESP |
| 732 | Spanish Sahara | SP.SAHRA | SP.SAHARA | EH | ESH |
| 144 | Sri Lanka | SR.LANKA | SRI LANKA | LK | LKA |
| 736 | Sudan | SUDAN | SUDAN | SD | SDN |
| 740 | Surinam | SURINAM | SURINAM | SR | SUR |
| 744 | Svalbard and Jan Mayen Islands | SVALBARD | SVALBARD ISL | SJ | SJM |
| 748 | Swaziland | SWAZILND | SWAZILAND | SZ | SWZ |
| 752 | Sweden | SWEDEN | SWEDEN | SE | SWE |
| 756[1] | Switzerland | SWITZRLD | SWITZERLAND | CH | CHE |
| 760 | Syrian Arab Republic | SYRN A R | SYRN ARAB RF | SY | SYR |
| 764 | Thailand | THAILAND | THAILAND | TH | THA |
| 768 | Togo | TOGO | TOGO | TG | TGO |
| 772 | Tokelau Islands | TOKELAU | TOKELAU ISLD | TK | TKL |
8
