| 2018 | 3 Arroyos S.A. |
| 2018 | 360 ENERGY - ADMINISTRACION PRAEDA |
| 2018 | A. Ropelato srl |
| 2018 | A.D. BARBIERI S.A. |
| 2018 | AA ABRASIVOS ARGENTINOS SAIC |
| 2018 | ABAgas |
| 2018 | ABASTO SHOPPING |
| 2018 | ABB |
| 2018 | Abbott Laboratories |
| 2018 | ABELSON S.A. |
| 2018 | ACA - INTENDENCIA |
| 2018 | Aca Salud Coop. |
| 2018 | ACADEMIA NACIONAL DE MEDICINA |
| 2018 | ACC GROUP S.A. |
| 2018 | ACCENTURE |
| 2018 | Acerbrag S.A. |
| 2018 | ACEROS BOEHLER SA |
| 2018 | ACEROS CORONA S.R.L. |
| 2018 | ACSUR S.A. |
| 2018 | ACTION TRAVEL S.A. |
| 2018 | ACTIVE COSMETIC |
| 2018 | ADAMA SA |
| 2018 | ADECCO ARGENTINA S.A. |
| 2018 | ADECOAGRO |
| 2018 | ADIF SE |
| 2018 | ADMINISTRACION FIDEICOMISO UNO |
| 2018 | ADMINISTRACION STAINO |
| 2018 | ADN COMUNICACION |
| 2018 | ADUANA - DIV. SELECTIVIDAD ADUANERA |
| 2018 | ADUBA |
