Twelve new records of lichen species are reported from the southwestern coast of South Korea. Among them, ten are crustose lichens and two are macrolichens. Caloplaca yuchiorum and Lecidea varians are reported for the first time from Asia. The coastal rocky area offers great potential for the discovery of new or previously unrecorded crustose lichens in the country. Key words — biodiversity, taxonomy, maritime, saxicolous, lichenized fungi.