- Q-Core Ltd.
- Qarad b.v.b.a.
- Qayum & Elahisons (PVT) Ltd.
- QBC Diagnostics
- Qosina
- QRS Diagnostic
- Qserve Consultancy B.V.
- Quad Five
- QualityLabs Biomaterial Testing GmbH
- Quanta Computer Inc.
- Quanta System S.p.A.
- Quantum Medical Imaging, LLC
- Quark Medical Products
- quartett GmbH
- Quick Silver Instruments
- Quimica Clinica Aplicada S.A.
- Quintessenz TV Wartezimmer GmbH
- Quotient Diagnostics Ltd