- A. Menarini
- A.N.B.
- AB-Biotics
- Abbott
- Abio
- Acino Switzerland
- Advance Pharma
- Aeva
- AFT Pharma
- AFT Pharmaceuticals
- Alcon
- AlfaSigma
- Alliance Pharma
- Allinon Pharma
- Almirall
- Amdipharm
- Amgen
- Antah Pharma
- Apex
- Apex Lab
- Aspen
- Aspen Sarl
- Astellas Pharma
- AstraZeneca
- Atnahs Pharma
- Aurena Lab
- Aurobindo Pharma
- Averroes Pharma
- Avex
- Avo