Lecanora loekoesii is a species of corticolous (bark-dwelling), crustose lichen in the family Lecanoraceae.

Found in South Korea, it was formally described as a new species in 2011 by Lei Lü, Yogesh Joshi, and Jae-Seoun Hur.

The specific epithet loekoesii honours Hungarian lichenologist László Lőkös, who collected the type specimen.

The lichen forms a thin, grey, crust-like thallus that lacks soredia, pruina, and a prothallus.

Its asci contains from 12 to 16 ascospores, each of which are ellipsoid, hyaline, and typically measure 12.6–15.3 by 7.5–8.5 μm.