| Silver Star | Estrella de Plata |
| Silver Surfer | Silver Surfer |
| Silver Teal | Anas versicolor |
| Silver the Hedgehog | Silver The Hedgehog |
| Silver thistle | Carlina acaulis |
| silver wedding | bodas de plata |
| silver-plate | platear |
| Silver-spotted Skipper | Comma |
| silver-tongued | de voz encantador |
| Silverado | Silverado |
| silverback | espalda plateada |
| silvered | plateado |
| Silvereye | Zosterops lateralis |
| silverfish | lepisma |
| Silverpit crater | Cráter Silverpit |
| silverside | pejerrey |
| silversmith | platero |
| Silverstone | Circuito de Silverstone |
| Silverstone Circuit | Circuito de Silverstone |
| silverware | cubiertos |
| silvery | argentino |
| silvery-cheeked antshrike | batará crestado |
| Silvery-cheeked Hornbill | Ceratogymna brevis |
| Silvestre de Sacy | Silvestre de Sacy |
| Silvia | Silvia |
| Silvia Saint | Silvia Saint |
| Silvio Berlusconi | Silvio Berlusconi |
| Silvio Gesell | Silvio Gesell |
| Silvio Pettirossi International Airport | Aeropuerto Internacional Silvio Pettirossi |
| Silvius | Silvio |
| SIM card | tarjeta SIM |
| SIM lock | Bloqueo SIM |
| Sima Qian | Sima Qian |
| Simaroubaceae | Simaroubaceae |
| Simat de la Valldigna | Simat de Valldigna |
| Simchat Torah | Simjat Torá |
| SimCity | SimCity |
| SimCity Societies | SimCity Societies |
| SIMD | Single Instruction Multiple Data |
| Simele massacre | Simele massacre |
| Simeon | Simón |
| Simeon I of Bulgaria | Simeón I de Bulgaria |
| Simeon Saxe-Coburg-Gotha | Simeón de Sajonia-Coburgo Gotha |
| Simferopol | Simferópol |
| Simferopol International Airport | Simferopol |
| simian | símico |
| Simian immunodeficiency virus | Virus de inmunodeficiencia en simios |
| similar | parecido |
| Similar matrix | Matriz semejante |
| similarity | semejanza |
