| Sousaphon | sousaphone |
| Sousafon | Sousaphone |
| Southampton | Southampton |
| Houston | Houston |
| sozusagen | so to speak as it were quasi sort of to all intents and purposes |
| Megaphon | bullhorn megaphone |
| Semaphor | semaphore |
| Vibraphon | vibraphone |
| Kolophon | colophon |
| Ktesiphon | Ctesiphon |
| Sisyphos | Sisyphus |
| polyphon | polyphonic |
| Homophon | homophone |
| Saxophon | saxophone sax horn |
| Siphon | trap siphon syphon soda siphon |
| obschon | although albeit though |
| soupieren | lunch |
| Soundso | so-and-so so and so such and such such-and-such |
| Soutane | cassock soutane |
| Souverän | sovereign |
| souverän | sovereign |