Elachista regificella is a moth of the family Elachistidae, with a restricted distribution in Europe.
The wingspan is about . Adults are on wing in July in one generation per year.
The larvae feed on greater wood-rush (Luzula sylvatica) mining the leaves of their host plant. Pupation takes place outside of the mine.
The moth has been found in Great Britain and Romania. It might also occur in the Netherlands.