Édouard Georges Delacroix (24 January 1858 in Montrouge – 1 November 1907 in Paris) was a French mycologist and plant pathologist. Beginning in 1886 he worked in the laboratory of plant pathology at the Institut nationale agronomique, where he later served as a lecturer of descriptive botany (from 1895) and plant pathology (from 1898). In 1899 he was named director of the Station de Pathologie végétale in Paris. His name is associated with the mycological species Aspergillus delacroixii (synonym, Aspergillus nidulans var. echinulatus).