During an investigation on Cladosporium species associated with numerous substrates of various localities in Iran during 2011-13, eight species including C. delicatulum, C. echinulatum, C. exile, C. macrocarpum, C. neriicola, C. pannosum, C. scabrellum and C. uredinicola were identified based on the morphological characters. All these species are new records for the Iranian mycobiota, except for C. echinulatum, C. macrocarpum and C. uredinicola. Furthermore, C. echinulatum and C. neriicola are reported as plant pathogens, causing lesion and leaf spot of Dianthus sp. and Nerium oleander, respectively.