| 2003 | SADAIC |
| 2003 | SAINT GOBAIN WEBER ARGENTINA S.A. |
| 2003 | SAN LUIS - FUNDACION I.C.R.E.D |
| 2003 | SANATORIO ANTARTIDA |
| 2003 | SANCOR |
| 2003 | SANTANDER |
| 2003 | SAP |
| 2003 | SAPORITI HERMANOS - RR HH |
| 2003 | SATHYA |
| 2003 | SECRETARIA DE DESARROLLO SOCIAL |
| 2003 | SECRETARIA DE EDUCACION DEL GOB.CDAD. |
| 2003 | SECRETARIA DE INF.PUBLICA |
| 2003 | SECRETARIA ELECTORAL |
| 2003 | SEDRONAR |
| 2003 | SEL |
| 2003 | SENASA |
| 2003 | SENSOR MATIC ARG. S.A. |
| 2003 | SERVICE BUREAU INTETEL |
| 2003 | SERVICIOS MEDICOS ARGENTINA |
| 2003 | SERVICOR |
| 2003 | SGS ARGENTINA S.A. |
| 2003 | SHILTON WEYENS |
| 2003 | SIF |
| 2003 | SISCOM DE ARGENTINA S.A. |
| 2003 | SITECA S.R.L. |
| 2003 | SKAL |
| 2003 | SOCIEDAD DE FOMENTO PARQUE GRAL PAZ |
| 2003 | SODERIA FISHETI |
| 2003 | SODEXHO ARGENTINA |
| 2003 | SOIMET |