Lecanora aberrata is a species of crustose lichen in the family Lecanoraceae. It was originally described in 1881 under the name Lecidea aberrata by Scottish lichenologist James Stirton. He discovered the type specimen in Taylor Range, near Brisbane, where it was growing on the bark of Eucalyptus crebra. John Elix transferred it to Lecanora in 2007 because of the reduced or excluded algal cells in the apothecial margins, as well as the structure of its asci, both of which are features typical of this genus.