In their role as providers of pharmaceutical products to society, pharmacists must demonstrate professionalism if they are to gain the trust of the community. The Japan Pharmaceutical Association has published the Pharmacist Platform in Japan and the Japanese Code of Ethics for Pharmacists; these resources provide clear guidelines for pharmacists and are an important component of the profession. Becoming a pharmacist involves joining a professional community and thereby pledging to accept a set of ethical standards. This concept of the pharmacy profession is shared by other countries, and the International Pharmaceutical Federation has indicated that professionalism is an issue that should be addressed in every country. This review introduces the Pharmacist Platform in Japan, the Japanese Code of Ethics for Pharmacists established by the Japan Pharmaceutical Association, and the background of each establishment.