Jean Jules Amann (8 March 1859, Lausanne – 1 February 1939, Lausanne) was a Swiss pharmacist and botanist.
He was a leading expert on mosses native to Switzerland.
[1] He studied chemistry at the University of Lausanne and in 1883 earned his pharmacy diploma in Zürich.
He then worked as a pharmacist in Rheinfelden and Zürich, and in 1886 he purchased the Englische Apotheke in Davos.
In 1893 he returned to Lausanne,[2] where he later taught classes in microscopy at the pharmacy school associated with the university.