| Company | Location |
|---|---|
| Oregon State University - Microtechnology-based Energy & Chemical Systems | Corvallis, Oregon, United States |
| Orla Protein Technologies Ltd. | Newcastle Upon Tyne, United Kingdom |
| Ormecon GmbH | Ammersbek, Germany |
| Orthovita Inc. | Malvern, Pennsylvania, United States |
| Osaka University | Osaka, Japan |
| Oxane Materials Inc. | Houston, Texas, United States |
| Oxford Bioscience Partners | Boston, Massachusetts, United States |
| Oxford Instruments | Concord, Massachusetts, United States |
| Oxford Instruments Plasma Technology | Bristol, United Kingdom |
| Oxford Microbeams Ltd. | Oxon, United Kingdom |
