Medical device manufacturers: O
- O R Pty
- O&P Solutions
- O.C. Hairsystems
- O2 Concepts
- O3 Enterprise
- O4 Wheelchairs
- Oacp
- OBA
- Obayashi Mfg
- Oberon Fiber Technologies
- Objective Imaging
- OBRO
- OBS Medical
- Octika
- Oculera
- Oculus
- Od-Os
- Odiotek
- Odontokoala
- Oehm und Rehbein
- Oertli Instrumente
- Oezpinar
- Ofa
- Off Carr
- Offhealth
- Officine Ortopediche Rizzoli
- Og Wellness Technologies Headquarters
- Ohhmed
- Ohira
- Oiarso, S. Coop
- OK biotech
- Okeiro
- Okm
- Okolab
- Okuman
- Okuvision
- Oldelft Benelux
- Olea Medical
- OLFA
- Olgunmedikal
- Olivo
- Olsen Indústria e Comércio
- Olympus
- Olympus Winter & Ibe
- Omda
- Omega Bio-tek
- Omega Diagnostics
- Omegametrix
- Omicron-Laserage Laserprodukte
- Omixon
- Omni
- OMNIlife science
- Omnilight
- Omron
- Oms Officine Meccaniche Specializzate
- Oncare
- OncoBeta
- OncoDNA
- Oncomedics
- Oncudental
- Ondal
- One Lambda
- One Ortho
- OneLife
- Onera
- Ongoingcare
- Onlycare
- Onnamed
- Onsen
- Onwelo
- Onyxcz
- OOley Care
- Oomi
- OOO NPF "Rehabilitation technologies"
- OPED
- Open Bionics
- Open Line Vitaly d.o.o
- Operon
- Ophiomics
- Ophmed
- Opiatech
- Opitek
- OPO
- Oppo
- OPPO Medical
- Opsens
- Opt Retina
- Opt Surgisystems
- Opta-Tech
- Optainhealth
- Optec
- Optellum
- Optergo
- Optical Integrity
- Opticell
- Optika Microscopes
- Optikon 2000
- Optimedical
- Optimummedical
- Optium
- Optoacoustics
- Optolab3D
- Optolane
- Optomed
- Optomedic
- Optomic
- Optonet
- Optopol
- Optos
- Optosmart
- Optovue
- OptraSCAN
- opTricon
- Ora Medical
- OraMetrix
- OrangeCAD Med
- orangedental
- Orantech
- Orasure
- Orbit
- Orca Dental AI
- Orcz
- Ordisi
- Orfit
- OrganOx
- Orgaterm
- Orgentec
- Orientgene
- Origen
- Origene
- Origin Medical Devices
- Orion
- Orionstar
- Orjinalmedikal
- Orliman
- Orlvision
- Ormedi Incorporation
- Ormesa
- Ormigo Z O O
- Orodeka
- Oroi
- Orpedo
- Orphée
- Orsaortopedi
- Orteam
- Ortec
- ORTEX , spol. s r.o
- OrthAlign
- Ortho Cape
- Ortho Clinical Diagnostics Biotechnology Development (Shanghai)
- Ortho Km
- Ortho-Clinical Diagnostics
- Ortho-Clinical Diagnostics Dba Quidel
- Ortho-Clinical Diagnostics Raritan
- Ortho-Clinical Diagnostics Rochester
- Ortho-Clinical Diagnostics Summers Ridge San Diego
- Ortho-Medical
- ORTHO-REHA Neuhof
- Ortho24
- Orthobaltic
- Orthobroker
- Orthofab
- Orthofix
- Orthoguard
- Orthoheal
- Orthokey
- Orthomedica
- Orthomobility
- Orthopauher
- OrthoPediatrics
- OrthoPediatrics Canada ULC
- Orthophysics
- Orthopred
- Orthoscan
- Orthosoft
- Orthosxxi
- Orthotech Rehabilitation
- Ortika
- Ortivus
- Ortoiberica
- Ortoma
- Ortopedia Llorach
- Ortopedijos technika
- Ortopedinen Osteopaatti T.Rantala ky
- Ortoprofil
- Ortosana
- Ortoservis
- Ortotecsa
- Ortotex Medical
- Oruba
- Oryamedikal
- OSANG Healthcare
- Osatu Sociedad Cooperativa
- Oscar Medtec
- Oscilla
- Oscimedsa
- Osind Medi Tech
- Oska
- OSKA Care
- Oska Health Medical
- Oslo universitetssykehus HF
- Ossenberg
- Osseointegration
- OssTec
- Osstem
- Ostar Beauty Sci-Tech
- Osteoid
- Osteonic
- Osteoporosis Research
- OsteoSys
- Osthoff Vertretungen
- Osypkamed
- OT Bioelettronica
- OTC Healthcare
- Otech Industry
- Oticon Medical
- Otivio
- OTN Innovations
- Otodynamics
- OTOM
- Otopront
- Otos
- Otsukael
- Ottobock
- Otumed
- Otwo
- Oui Labs
- Outcomes4Me Germany
- Ovationmed
- Overbed
- Overjet
- Overture
- Oviva
- Owen Mumford
- Ownsmile Biotechnology
- Oxavita
- Oxehealth
- Oxford Cancer Biomarkers
- Oxford Immunotec
- Oxford Medical Healthcare
- Oxford Nanopore Diagnostics
- Oxipit
- Oxoid
- OXUS
- Oxybarica
- OxyPrem
- Oxytek Medical Technology
- Oxyvein
- Oxyvix
- Oymotion
- Ozonebio
- Össur Iceland ehf
- Özcan Kardeşler Tip Ci̇hazlari Sanayi̇ Ve Ti̇caret Şti̇
- Özden Tip Tibbi̇ Ci̇haz Ve Malzemeler Gida Teksti̇l Ti̇c Şti̇