| 2019 | SADE ELECTROMECANICA SA |
| 2019 | SAEGRE |
| 2019 | SAENZ HNOS S.A. |
| 2019 | SAF S.A. |
| 2019 | SAIF S.A. |
| 2019 | SAINT GREGORYS SCHOOL |
| 2019 | Saint Matthew´s College North |
| 2019 | SALINI - IMPREGILIO SPA - SA HEALY COMPANY |
| 2019 | SAMAYAY S.R.L. |
| 2019 | SAN ANTONIO INTERNACIONAL |
| 2019 | SAN ISIDRO COPIADOS S. A. |
| 2019 | SAN PEDRO APOSTOL |
| 2019 | Sanatorio Agote |
| 2019 | SANATORIO ANCHORENA |
| 2019 | Sanatorio Bernal SRL |
| 2019 | SANATORIO DR JULIO MENDEZ - OBSBA |
| 2019 | SANATORIO LAS LOMAS SA |
| 2019 | SANATORIO MODELO QUILMES S.A. - APRES S.A. |
| 2019 | SANATORIO OTAMENDI Y MIROLI |
| 2019 | SANCOR SALUD |
| 2019 | Sanitycare Internacion Domiciliaria SRL |
| 2019 | Santa Lucía Ecológica |
| 2019 | SANTA MONICA ARGENTINA S.A. |
| 2019 | SANTANDER |
| 2019 | SANYO COLOR S.A. |
| 2019 | SAPORITI HERMANOS - RR HH |
| 2019 | SAS AUTOMOTRIZ |
| 2019 | SAXS SRL |
| 2019 | SCHENKER ARGENTINA SA |
| 2019 | SCHNEIDER ELECTRIC ARGENTINA |