Acarospora brodoana is a species of saxicolous (rock-dwelling) crustose lichen in the family Acarosporaceae. It was described as a new species in 2016 from specimens collected in the San Bernardino Mountains in southern California. The type specimen was collected on granite from a steep terraced slope above the cirque near Dollar Lake. The species epithet honors the lichenologist Irwin M. Brodo. The lichen is distinguished from similar species by the combination of a blackened upper ascospore-bearing surface ( ) and a black tissue layer beneath the spore-bearing region ().