- Cadila Healthcare
- Cadilla Pharmaceutical
- Camber
- Catalent Japan
- Catalent Pharma Solutions
- CDBIO
- Celgene
- Celltrion Healthcare
- Central Poly Trading
- Charoon Bhesaj
- Chengdu Institute of Biological Products
- Cheplapharm
- CHEPLAPHARM Arzneimittel GmbH
- Chiesi
- Chiesi Farmaceutici
- Chiron Behring
- Chong Kun Dang
- Chugai Pharma
- Community Pharm PCL
- Concord Biotech
- Cosma Medical
- CSL Behring