Elachista antipetra is a moth in the Elachistidae family. It was described by Meyrick in 1922. It is found in India. The wingspan is about 6 mm. The forewings are dark brown, the proximal part of the wing lighter and sparsely covered with brown scales on a greyish ground colour, the wing is darker beyond middle. The transverse fascia are antemedian, white and slightly oblique and blackish brown scales form a blurred patch just beyond the fascia and between the costal and tornal spots. The hindwings are dark brown, but slightly lighter basally.