Elachista magidina is a moth of the Elachistidae family that is found in the coastal forests of New South Wales and the Lamington National Park in southern Queensland. The wingspan is 9.6–11.5 millimetres (0.38–0.45 in) for males and 9.2–11.4 millimetres (0.36–0.45 in) for females. The forewings are white while the hindwings are grey.