Adolf Stachel (born 28 February 1913 in Augsburg, died 1971 in Frankfurt am Main) was a German chemist, researcher and inventor, who worked as a researcher at the chemical and pharmaceutical company Cassella (now Sanofi) in Frankfurt-Fechenheim for much of his career.He held a doctoral degree in chemistry (Doktor-Ingenieur) from the Technische Hochschule München.