Company Name (*Make St Mary*)
- O-Two Medical Technologies Inc (1)
- OASIS MEDICAL, INC. (69)
- OCULUS Optikgeräte Gesellschaft mit beschränkter Haftung (1)
- ODIN MEDICAL LIMITED (1)
- OLYMPUS MEDICAL SYSTEMS CORP. (26)
- ONE LAMBDA, INC. (1)
- ONKOS SURGICAL, INC. (2)
- ORANGE SURGICAL INSTRUMENTS, LLC (160)
- ORTHO ORGANIZERS, INC. (19)
- ORTHO-DESIGN (PTY) LTD (1)
- ORTHO-MED, INC. (3)
- ORTHOFIX SRL (12)
- ORTHOFX (2)
- ORTHOMEDFLEX LLC (1)
- ORTHOMERICA PRODUCTS, INC. (6)
- ORTHOPAEDIC IMPLANT COMPANY, THE (7)
- ORTHOPEDIATRICS CORP. (5)
- ORTHOXEL DESIGNATED ACTIVITY COMPANY (15)
- OSTEOMED LLC (103)
- OTC DENTAL CORPORATION (1)
- OTOHARMONICS CORPORATION (2)
- OVATION INTERNATIONAL (81)
- OWENS & MINOR DISTRIBUTION, INC. (3)
- Odne AG (1)
- Ortho Development Corporation (30)
- Orthopediatrics Canada ULC (29)
- Orthopedic Designs North America, Inc. (7)
- Osheru, L.L.C. (10)
- Osseus Fusion Systems, LLC (2)
- Osteocentric Technologies, Inc. (181)
- Osteosymbionics, LLC (2)
- Ototronix, LLC (1)
- Otto Bock Healthcare Products GmbH (71)
- Oxford Immunotec, Inc. (2)