Paul Dietel (15 February 1860, Greiz – 30 October 1947, Zwickau) was a German mycologist.
He studied mathematics and natural sciences at the universities of Leipzig, Berlin and Göttingen, and afterwards worked as a schoolteacher in Greiz, Leipzig, Reichenbach im Vogtland and Glauchau.[1]
He specialized in research of rust fungi (Uredinales) — from 1887 to 1943 he was the author of 150 scientific papers on rusts.[2] His extensive treatment of rust fungi in Engler and Prantl's Die Natürlichen Pflanzenfamilien was recognized as its definitive account for many years.[3]
In 1897 Paul Christoph Hennings named the genus Dietelia (family Pucciniosiraceae) in his honor.[4]