| Sondalo | Sondalo |
| sonde | probe |
| Sonde atomique tomographique | Atom probe |
| Sonde Helios | Helios probes |
| Sonde ionique focalisée | Focused ion beam |
| Sonde nucléique | Nucleic probe |
| sonde spatiale | probe |
| sonder | poll |
| Sonder qqn | Tooth |
| sonder quelqu'un | make a cautious approach to someone |
| Sonderbund | Sonderbund |
| Sonderjylland | Sonderjylland |
| Sonderkommando | Sonderkommando |
| Sondershausen | Sondershausen |
| Sonderweg | Sonderweg |
| Sondes Voyager | Voyager program |
| Sondeur sonore | Depth-finder |
| sondeur à ultra-sons | echo sounder |
| Sondika | Sondika |
| Sondrio | Sondrio |
| SONET | Synchronous optical networking |
| Song Ailing | Soong Ai-ling |
| Song Chong-gug | Song Chong-Gug |
| Song Meiling | Soong May-ling |
| Song Qingling | Soong Ching-ling |
| Song Shan | Mount Song |
| Song Shu | Book of Song |
| Song Taizu | Emperor Taizu of Song |
| songe | dream |
