Pharmacy is an ethical profession. The aim of this study was to investigate the history of pharmacy ethics in Iran. In the ancient Persia, medical and pharmaceutical ethics were related to religious rules, and everybody had to respect it. The ethical rules were similar to some current pharmacy ethics. During Islamic era, the pharmacy ethics were edited according to the Islamic rules. After introduction of European pharmacy into Iran, the pharmacy ethics did not change and was regarded as before. By presentation of bioethics and medical ethics in recent years, new activities are carried out for better manipulation of their rules in health professions including pharmacy.