Cedestis subfasciella is a moth of the family Yponomeutidae.

It is found in almost all of Europe, except part of the Balkan Peninsula.

The forewings are brown slightly reddish-tinged, towards base and apex whitish-sprinkled; a somewhat curved white fascia before middle, preceded by a darker fascia; indistinct whitish tornal and opposite costal spots; 5 and 10 absent.

The larva is pale brown, greener dorsally; head and plate of 2 black[3] Adults are on wing from March[1] or April[4] to September[1] or October.

Pupation takes place outside of the mine[5] in a cocoon on the ground.