Lecanora aberrata is a relatively rare species of crustose lichen in the family Lecanoraceae.

The lichen 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.

[2] Australian lichenologist John Elix transferred Lecidea aberrata to the genus 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 Lecanora.

[1] Lecanora aberrata has a grey-white to creamy-white crust-like thallus up to 7 cm (2.8 in) wide.