| Sydney Tamiia Poitier | Sydney Tamiia Poitier |
| Syens | Syens |
| Syktyvkar | Syktyvkar |
| Syldavia | Syldavie |
| Sylke Otto | Sylke Otto |
| Syllable | Syllable |
| Sylva Koscina | Sylva Koscina |
| Sylvain Wiltord | Sylvain Wiltord |
| Sylvanus Morley | Sylvanus Morley |
| Sylvester James | Sylvester |
| Sylvester Stallone | Sylvester Stallone |
| Sylvia | Sylvia |
| Sylvia cantillans | Fauvette passerinette |
| Sylvia communis | Fauvette grisette |
| Sylvia hortensis | Fauvette orphée |
| Sylvia Kristel | Sylvia Kristel |
| Sylvia melanocephala | Fauvette mélanocéphale |
| Sylvia Plath | Sylvia Plath |
| Sylvia sarda | Fauvette sarde |
| Sylvia undata | Fauvette pitchou |
| Sylvicapra grimmia | Sylvicapra grimmia |
| Sylviidae | Sylviidae |
| Sylvilagus audubonii | Sylvilagus audubonii |
| Sylvinho | Sylvinho |
| Sylviornis neocaledoniae | Sylviornis neocaledoniae |
| Sylvius Leopold Weiss | Sylvius Leopold Weiss |
| Symantec | Symantec |
| Symbian | Symbian OS |
| Symphalangus syndactylus | Siamang |
| Symphonic metal | Metal symphonique |
| Symphonic rock | Rock symphonique |
| Symphony | Symphonie |
| Symphony X | Symphony X |
| Symphyla | Symphyles |
| Symphysodon | Symphysodon discus |
| Symphysodon aequifasciatus | Symphysodon discus |
| Symphysodon discus | Symphysodon discus |
| Symphyta | Symphyta |
| Symphytum | Consoude officinale |
| Symphytum officinale | Consoude officinale |
| Symplocarpus foetidus | Symplocarpus foetidus |
| SYN cookies | SYN cookie |
| SYN flood | SYN flood |
| Synapsida | Synapsida |
| Synaptic | Synaptic |
| Synchiropus splendidus | Synchiropus splendidus |
| Synchronous Digital Hierarchy | SONET |
| Syndication | Syndication |
| Syngman Rhee | Syngman Rhee |
| Syngnathidae | Syngnathidae |
| Syngnathinae | Syngnathus |
| Synth pop | Synthpop |
| Synth rock | Electro rock |
| Synthenex | Synthenex |
| Syr Darya | Syr-Daria |
| Syracuse | Syracuse |
| Syriana | Syriana |
| Syringa | Syringa |
| SysLog | Syslog |
| System call | Appel système |
| System of a Down | System of a Down |
| System-on-a-chip | System on Chip |
| Systema Naturae | Systema Naturae |
| Systems Network Architecture | IBM Systems Network Architecture |
| SZ | SZ |
| Szabolcs-Szatmár-Bereg | Szabolcs-Szatmár-Bereg |
| Szekszárd | Szekszárd |
| Szentendre | Szentendre |
| Szepes | Zips |
| Szerém | Syrmie |
| Sziget Festival | Sziget Festival |
| Szigethalom | Szigethalom |
| Szlachta | Szlachta |
| Szolnok | Szolnok |
| Szombathely | Szombathely |
| Székesfehérvár | Székesfehérvár |
| Sága | Sága |
| Sándor Ferenczi | Sándor Ferenczi |
| Sándor Kocsis | Sándor Kocsis |
| Sándor Márai | Sándor Márai |
| Sándor Petőfi | Sándor Petőfi |
| Sâles | Sâles |
| Sânmartin | Sânmartin |
| Sânncraiu | Sânncraiu |
