- Maat Pharma
- Maco-Pharma
- Magis Farmaceuti Spa
- Majorelle
- Marinus Pharmaceuticals, LNC.
- Marlborough Pharmaceuticals Ltd
- Maruho Co Ltd
- Mayoly-Spindler
- Mayoly-Spindler
- Medac
- Medac SAS
- Mediam
- Medipha Santé
- = médipha santé sas
- Medisol
- Mediwin Ltd | Biopharma bv
- Medtronic BioPharma BV
- Medynex
- Melisana Pharma France
- Menarini France
- Merck Serono SAS
- Ομάδα Pharma Mercury
- Mercury Pharmaceuticals Ltd
- Merial | NV
- Merus NV
- Merz Αισθητική Γαλλία
- Merz Pharma France
- Messer France SAS
- Micropharm Ltd
- Milpharma Ltd
- Biomedicine Miltenyi
- GmbH
- Mirati Therapeutics
- Mirum Pharmaceuticals Γαλλία SAS
- Mission Pharmaccal
- Mitem Pharma
- Mobius Therapeutics LLC
- MOC
- Moderna Biotech Spain, SL
- Molnlycke Health Care
- Morningsoide Healthcare Ltd
- MSD Γαλλία
- Vaccins MSD
- MT Pharma America
- Mundipharma
- Mundipharma Limited
- Mylan
- Mylan Medical SAS
- Mylan Pharmaceuticals Limited