Elachista albidella is a moth of the Elachistidae family, described by William Nylander in 1848. It is found from Fennoscandia and northern Russia to the Pyrenees, Italy and Hungary and from Ireland to Ukraine. It is also found in North America. The wingspan is 9–10 millimetres (0.35–0.39 in). The larvae feed on Calamagrostis arundinacea, Carex acuta, Carex acutiformis, Carex riparia, Deschampsia cespitosa, Deschampsia flexuosa, Eleocharis palustris, Eriophorum angustifolium, Melica nutans, Poa palustris and Scirpus caespitosus.