Candelariella vainioana is a species of crustose lichen in the family Candelariaceae.

It was described by Finnish lichenologist Rainar Hakulinen in 1954 from collections made by Edvard August Vainio in Hollola in 1874.

[1] The lichen has been reported from Finland, Sweden, and Norway.

The lichen's common name in Swedish is kopparägglav,[2] and kuparikeltuaisjäkälä in Finnish, both of which mean "copper egg-yolk".

As of 2019, it is considered to be an endangered species in Finland due to its small population.