Elachista nobilella is a moth of the family Elachistidae found in Europe.
The wingspan is . Adults are on wing from May to July.
The larvae feed on grasses, including Agrostis, Arrhenatherum, Bromus, Carex, Dactylis, Festuca, Yorkshire fog (Holcus lanatus) and hairy wood-rush (Luzula pilosa).
It is found from Scandinavia and Finland to the Iberian Peninsula and Italy and from France to Romania.