| 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 |
| 2003 | SOLIS CANO (EX AUTOPISTAS GEA 8) |
| 2003 | SOLVAY QUIMICA S.A. |
| 2003 | SPORTMAN |
| 2003 | STANDARD CHARTERED BANK |
| 2003 | SUBSECRETARIA DE TURISMO DEL GOBIERNO DE LA CIUDAD |
| 2003 | SUBTERRANEOS DE BS. AS. |
| 2003 | SUN CHEMICAL INK.S.A |
| 2003 | SUPERINTENDENCIA DE SERVICIOS DE SALUD |
| 2003 | SUPRA INVEST |
| 2003 | SV COMUNICACION S.A. |
| 2003 | SVD |
| 2003 | SWAN TURISMO |
| 2003 | SWIDT ARMIT |
| 2003 | SWISS INTERNATIONAL AIR LINES LTD - ARGENTINA |