| Stew | | STOO, STYOO | English | |
| Stewart | | STOO-ərt, STYOO-ərt | English, Scottish | |
| Stirling | | STUR-ling | English (Rare) | |
| Storm | | STORM (English) | English (Modern), Danish, Norwegian | |
| Stu | | STOO, STYOO | English | |
| Stuart | | STOO-ərt, STYOO-ərt | English, Scottish | |
| Subhash | | - | Indian, Hindi, Marathi, Gujarati, Bengali | |
| Sue | | SOO | English | |
| Suellen | | soo-EL-ən | English | |
| Sujay | | - | Bengali, Indian, Marathi | |
| Sukie | | SOO-kee | English | |
| Sullivan | | SUL-i-vən | English | |
| Suman | | - | Bengali, Indian, Hindi, Marathi, Telugu, Kannada, Nepali | |
| Sumantra | | - | Bengali | |
| Sumeet | | - | Indian, Hindi, Marathi, Bengali, Punjabi | |