Erasmus Julius Nyárády (7 April 1881 - 10 June 1966) was a Romanian botanist of Hungarian ethnicity.

He was born in Transylvania, in a town then called in Hungarian: Nyárádtő, in Romanian: Nirașteu, now known as Ungheni, Mureș.

He then studied at the Natural History Teachers' College in Budapest, graduating from the Faculty of Geography in 1904.

He spent the next seven years teaching in the gymnasium of Kežmarok (Hungarian: Késmárk), then in 1911 moved back to Târgu Mureș.

Between 1940 and 1944 together with Rezső Soó he published his 9-volume Kolozsvár és környékének flórája (Flora of Cluj and its environment).