Ernst Ludwig Victor Hermann Ambronn (11 August 1856, Meiningen – 28 March 1927, Jena) was a German botanist and microscopist.
Ambronn studied at the universities of Heidelberg, Vienna and Berlin, where his instructors were Leopold Kny and Simon Schwendener.
Following graduation (1880), he worked as an assistant to August Schenk in the botanical institute at Leipzig, where from 1882 to 1887, he was curator of the university herbarium.
[1][2] In 1899 he relocated to the University of Jena, where he eventually attained the chair of scientific microscopy.
While in Jena, in addition to his academic duties, he worked for several years as a research associate at the Carl-Zeiss-Stiftung.