| Company Name | Country |
|---|---|
| Opus Materia Ltd | Greece |
| Oranda Therapeutics Limited | Ireland |
| Oresund Pharma ApS | Denmark |
| Orexa B.V. | Netherlands |
| Orfenix BV | Netherlands |
| ORKEO | France |
| ORNYX OÜ | Estonia |
| Orphix Consulting GmbH | Germany |
| ORYX GmbH & Co. KG | Germany |
| Oryzon Genomics, S.A. | Spain |
| OSALIA | France |
| OSE Immunotherapeutics | France |
| OSIVAX | France |
| Osmond Labs AB | Sweden |
| OT4B | France |
| Ouro Medicines Ireland Ltd | Ireland |
| OvoVet Pharma SRL | Romania |
| Oxcia AB | Sweden |
| Oxolife SL | Spain |
| Ozack ApS | Denmark |
| P. Cosmidis & Co EE | Greece |
| P.H.U. Max-Profi Robert Kulbacki | Poland |
| P.T. Hadjigeorgiou & Co Ltd | Cyprus |
| PacingCure B.V. | Netherlands |
| Paesel & Lorei GmbH & Co. KG Biochemika, Diagnostika und Pharzeutika | Germany |
| Palo Biofarma, S.L. | Spain |
| Pan Cancer T B.V | Netherlands |
| PanGenix Pharma Limited | Cyprus |
| PannonPharma Gyógyszergyártó Kft. | Hungary |
| PannTheraPi SAS | France |
| Paradigm Biopharmaceuticals (Ireland) Ltd | Ireland |
| Paras Biopharmaceuticals Finland Oy | Finland |
| Passauer Pharma GmbH | Germany |
| Patient One | Netherlands |
| PEKANA Naturheilmittel GmbH | Germany |
| Pelpharma Handels GmbH | Austria |
| PentixaPharm AG | Germany |
| PEP-Therapy | France |
| Peptomyc S.L. | Spain |
| Pexxes GmbH | Germany |
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