| 2005 | SATHYA |
| 2005 | SAULER |
| 2005 | SCHENKER ARGENTINA SA |
| 2005 | SCHNEIDER ELECTRIC ARGENTINA |
| 2005 | SEALED ARGENTINA |
| 2005 | SEBAMAX |
| 2005 | SEC |
| 2005 | SECRETARIA DE EDUCACION DEL GOB.CDAD. |
| 2005 | SECRETARIA ELECTORAL |
| 2005 | SECRETARIAS Y NEGOCIOS S.A |
| 2005 | SEDRONAR |
| 2005 | SEGURIDAD INTERCONTINENTAL |
| 2005 | SEHOS S.A. |
| 2005 | SELF CONSULTORA |
| 2005 | SENASA |
| 2005 | SENOR TANGO |
| 2005 | SERES |
| 2005 | SERIFAST |
| 2005 | SERVICE BUREAU INTETEL |
| 2005 | SERVICIO GEOLOGICO MINERO ARGENTINO (SEGEMAR) |
| 2005 | SERVICIOS MEDICOS ARGENTINA |
| 2005 | SERVIFLEX |
| 2005 | SEW EURODRIVE ARGENTINA S A |
| 2005 | SFC. BANCO MUNDIAL |
| 2005 | SGS ARGENTINA S.A. |
| 2005 | SHILTON WEYENS |
| 2005 | SHIPPING |
| 2005 | SIADct S.A.- ARKINO S.A. - UTE. |
| 2005 | SIBA UTE OBRADOR QUILMES |
| 2005 | SIEMENS |