| Name | Ticker |
|---|---|
| SABCA - Societe Anonyme de Constructios Aeronautiques | SAB |
| Sapec | SAP |
| Sapec Strip | SAPS |
| Scheerders V Kerchove | SCHD |
| SEQUANA MEDICAL | SEQUA |
| Sioen Industries | SIOE |
| SIPEF (D) | SIP |
| SIPEF Strip (D) | SIPS |
| Smartphoto Group | SMAR |
| Sofina | SOF |
| Softimat | SOFT |
| Solvac Nom (Retail) | SOLV |
| Solvac Strip | SOLVS |
| Solvay | SOLB |
| Solvay Apr8 | SOLJ8 |
| Solvay Aug9 | SOLQ9 |
| Solvay Dec8 | SOLZ8 |
| Solvay Feb8 | SOLG8 |
| Solvay Jan8 | SOLF8 |
| Solvay Jul9 | SOLN9 |
| Solvay Jun8 | SOLM8 |
| Solvay Mar8 | SOLH8 |
| Solvay May8 | SOLK8 |
| Solvay Nov8 | SOLX8 |
| Solvay Oct7 | SOLV7 |
| Solvay Sep7 | SOLU7 |
| Spadel | SPA |
| Spector Photo Group Strip | SPES |
| St Gudule-Pl Cert | SAIG |
| Sucraf-Sucrerie et Raffinierie de l'Afrique Centrale | SUCR |