| Solid-state drive | Disco de estado sólido |
| Solid-state lighting | Solid-state lighting |
| Solidago canadensis | Solidago canadensis |
| Solidago virgaurea | Solidago virgaurea |
| Solidarism | Solidarismo |
| solidaristic | solidario |
| solidarity | solidaridad |
| Solidarity Electoral Action | Alianza Democrática de la Derecha |
| solidification | solidificación |
| solidify | solidificarse |
| solidity | solidez |
| solidly | firmemente |
| solidly built | robusto |
| solidly united | solidario |
| solidness | fijacioneza |
| solidus | sueldo |
| SolidWorks | SolidWorks |
| Solifugae | Solifugae |
| soliloquize | soliloquiar |
| soliloquy | monólogo |
| Solingen | Solingen |
| solitaire | solitario |
| solitariness | retiro |
| solitary | solo |
| solitary confinement | aislamiento penal |
| Solitary Tinamou | Tinamus solitarius |
| soliton | solitón |
| solitude | soledad |
| Sollentuna Municipality | Sollentuna |
| Sollicitor | Abogado |
| Sollicitudo Rei Socialis | Sollicitudo rei socialis |
| Solna | Solna |
| Solna Municipality | Solna |
| solo | solo |
| soloist | solista |
| Sololá | Sololá |
| Solomin | Solomin |
| Solomon | Salomón |
| Solomon Asch | Solomon Asch |
| Solomon ibn Gabirol | Ibn Gabirol |
| Solomon Islander | salomonense |
| Solomon Islands | Islas Salomón |
| Solomon Islands dollar | Dólar de las Islas Salomón |
| Solomon Islands Football Federation | Federación de Fútbol de las Islas Salomón |
| Solomon Islands Labour Party | Partido Laborista de las Islas Salomón |
| Solomon Islands national football team | Selección de fútbol de las Islas Salomón |
| Solomon Mikhoels | Solomon Mikhoels |
| Solomon of Hungary | Salomón |
| Solomon Perel | Salomón Perel |
| Solomon Sea | Mar de Salomón |
| Solon | Solón |
| Solothurn | Cantón de Soleura |
