Lobbyists having Pfizer as a client
- APCO Worldwide
- Burson-Marsteller
- Cassis Limited
- Edelman Public Relations Worldwide
- FIPRA International Limited
- Fleishman-Hillard
- FTI Consulting Belgium
- GCI Health Brussels
- Hanbury Strategy and Communications Limited
- Incisive Health
- Incite
- Ketchum
- Miltton Europe
- Ogilvy Group
- Porter Novelli NV
- RPP Group
- SFL Regulatory Affairs & Scientific Communication GmbH
- The Health Policy Partnership
- Vital Transformation
- ZN