There are three classes of membership of the Association:
- Full membership: companies engaged in research and/or development of pharmaceuticals. Should such a company also manufacture, it must do so in accordance with good manufacturing practice and quality control. Companies whose business is primarily the manufacture of generic products are excluded from membership.
- Associate membership: companies engaged in providing services to the pharmaceutical industry. Associate members shall not have the right to vote at meetings of the Association, or to participate in or receive the results of HKAPI surveys, nor shall they be eligible for election to the Board of Directors. All applications for membership are screened by the Board of Directors. Upon approval, the Association will charge an entrance fee of HK$10,000 for full member or HK$5,000 for associate member with an annual subscription fee.
- Full members
: based on a sliding scale of their sales revenue
- Associate members
- Academics and NGOs
Each full member is entitled to one vote. As of January 2019, there are 39 full members and 27 Associate members.