| Subbirettum | zucchetto |
| Subregnum | subkingdom |
| Subraum | hyperspace subspace |
| Subsidium | subsidy |
| Birett | biretta |
| Arboretum | arboretum |
| Surfbrett | surfboard |
| Sektierertum | sectarianism |
| Subskript | subscript |
| Substantivum | noun |
| Substitut | surrogate |
| suborbital | suborbital |
| Subgenus | subgenus |
| Subjekt | subject |
| Subkultur | subculture |
| Sublimation | sublimation |
| Sublizenz | sublicense |
| Subphylum | subphylum |
| Substrat | substrate |
| Subsystem | subsystem |