| Swansea | Swansea |
| Swat | SWAT |
| Swatch Internet Time | Hora Internet |
| Swaziland | Suazilandia |
| Sweep-picking | Sweep-picking |
| Sweet | Sweet |
| Sweyn I di Danimarca | Svend I de Dinamarca |
| Sweyn II di Danimarca | Svend II de Dinamarca |
| Sweyn III di Danimarca | Svend III de Dinamarca |
| Swietenia | Swietenia |
| Swift | Swift |
| Swindon | Swindon |
| swing | ritmo |
| Swinging London | Swinging London |
| Swiss Air Force | Luftwaffe |
| Swiss International Air Lines | Swiss International Air Lines |
| Swissair | Swissair |
| Swisscom Cup | Copa Suiza |
| Swissinfo | Swissinfo |
| switch | conmutador |
| Sword and sorcery | Fantasía heroica |
| Sy Snootles | Sy Snootles |
| Sybase SQL Server | Adaptive Server Enterprise |
| Syberia | Siberia |
| Syd Barrett | Syd Barrett |
| Syddanmark | Syddanmark |
| Sydney | Sídney |
| Sydney FC | Sydney Football Club |
| Sydney Harbour Bridge | Puente del puerto de Sídney |
| Sydney Pollack | Sydney Pollack |
| Sydney Swans | Sydney Swans Football Club |
| Sydney Tamiia Poitier | Sydney Poitier |
| Syens | Syens |
| Syldavia | Syldavia |
| Syllable | Syllable |
| Sylvain Wiltord | Sylvain Wiltord |
| Sylvanus Morley | Sylvanus Morley |
| Sylvester James | Sylvester |
| Sylvester Stallone | Sylvester Stallone |
| Sylvia | Sylvia |
| Sylvia atricapilla | Sylvia atricapilla |
| Sylvia borin | Sylvia borin |
| Sylvia cantillans | Sylvia cantillans |
| Sylvia communis | Sylvia communis |
| Sylvia melanocephala | Sylvia melanocephala |
| Sylvia Plath | Sylvia Plath |
| Sylvia undata | Sylvia undata |
| Sylvicapra grimmia | Sylvicapra grimmia |
| Sylviidae | Sylviidae |
| Sylvilagus audubonii | Sylvilagus audubonii |
| Sylvinho | Sylvio Mendes Campos Junior |
| Symantec | Symantec |
