Elachista griseicornis is a moth of the Elachistidae family. It is found in Ontario, Quebec and Minnesota. The length of the forewings is 3.9–4.3 millimetres (0.15–0.17 in). The forewings are unicolorous silky white. The hindwings are grey. The underside of the forewing is dark grey, while the underside of the hindwings is whitish.