| Name | Type | Country |
|---|---|---|
| Sapienza Università di Roma | University | |
| Sarein Sistemas S.L. | Enterprise | Spain |
| Savronik | Enterprise | Turkey |
| SCRAPERWIKI LTD | Enterprise | |
| Semantic Web Company | Enterprise | Austria |
| Semntech | Enterprise | Korea |
| SERIKAT | Enterprise | |
| Sidenor I+D | Enterprise | Spain |
| Sidenor Industrial | Enterprise | Spain |
| SITTA Silleria de Oficina S.L.L | Enterprise | Spain |