| Stringtheorie | string theory |
| Spieltheorie | game theory |
| Sprachtheorie | linguistic theory theory of language |
| Staatstheorie | theory of the state |
| Strengheit | sternness |
| Superstringtheorie | superstring theory |
| Springerin | jumper |
| Sprinterin | sprinter |
| Eichtheorie | gauge theory |
| Musiktheorie | music theory |
| Systemtheorie | system theory |
| Streicherin | string player |
| Strickerin | knitter |
| Stripperin | ecdysiast |
| streng geheim | top secret |
| Strategie | strategy |
| Strichcode | barcode |
| Stricher | escorts gigolo hustler man-whore rentboys |
| Strichfarbe | streak |
| Stringenz | stringency |