| 2017 | MD CORREO |
| 2017 | Mead Johnson Nutrition Argentina S.A. |
| 2017 | MEDANITO S.A |
| 2017 | MEDICINA LABORAL - GOB. DE LA CIUDAD |
| 2017 | MEDICINA LABORAL RP SALUD |
| 2017 | MEDICUS S.A. |
| 2017 | MEDIFE ASOCIACION CIVIL |
| 2017 | MEDITERRANEAN SHIPPING COMPANY SA ARGENTINA |
| 2017 | MEDIX I.C.S.A. |
| 2017 | MEDIZIN DE SERVICIOS S.A. |
| 2017 | MEISTER SRL |
| 2017 | MERCADO DE LINIERS - OFICINA SAENZ VALIENTE BULLRI |
| 2017 | MERCEDES BENZ ARGENTINA S.A. |
| 2017 | MERCEDES POMPEYA S.A. |
| 2017 | MERCK S.A. |
| 2017 | MESUCAN S.R.L. |
| 2017 | METALES DEL TALAR |
| 2017 | METALURGICA JMD S.A. |
| 2017 | Metalurgica Larraude S.A. |
| 2017 | METALURGICA RUAL |
| 2017 | METROBUS RN3 |
| 2017 | METROGAS |
| 2017 | METROPOL |
| 2017 | MEVATERAPIA S.A. |
| 2017 | MEXICHEM ARGENTINA S.A. |
| 2017 | MEYRO |
| 2017 | MICROFILTER S.A. |
| 2017 | MICROSTRATEGY |
| 2017 | Millanel Cosmética SRL |
| 2017 | MILTONIA SACIFIA |