| Silvio | | SEEL-vyo (Italian), SEEL-byo (Spanish) | Italian, Spanish, Portuguese, Croatian | |
| SimÃO | | - | Portuguese | |
| Sofia | | zo-FEE-ah (German), so-FEE-ah (Italian), soo-FEE-ə (Portuguese), SO-fee-ah (Finnish) | Norwegian, Swedish, German, Italian, Portuguese, Catalan, Greek, Finnish, Estonian, Slovak, Romanian | |
| Sol (1) | | - | Spanish, Portuguese | |
| Sonia | | SON-yə (English), SAWN-yə (English), SO-nyah (Italian) | English, Italian, Spanish, Portuguese, Romanian | |
| Susana | | soo-SAH-nah (Spanish) | Spanish, Portuguese | |
| Suzana | | - | Croatian, Serbian, Slovene, Macedonian, Portuguese (Brazilian) | |
| TÂNia | | - | Portuguese | |
| TÉO | | - | Portuguese | |
| TÚLio | | - | Portuguese | |
| TaÍS | | - | Portuguese (Brazilian) | |
| Tacito | | tah-CHEE-to (Italian), tah-THEE-to (Spanish), tah-SEE-to (Latin American Spanish) | Italian, Spanish, Portuguese | |
| Tadeu | | - | Portuguese | |
| Talita | | - | Portuguese (Brazilian) | |
| Tatiana | | tah-TYAH-nah (Russian, Polish, Spanish, Italian), TAH-tee-ah-nah (Finnish), ta-tee-AN-ə (English), ta-TYAN-ə (English) | Russian, Slovak, Bulgarian, Romanian, Polish, Greek, Georgian, Spanish, Portuguese, Italian, Finnish | |