Six new for science species of lichen-forming fungi from Republic of Korea, Eastern Asia, i. e.: Bacidina jasonhuri J. P. Halda, S. Y. Kondr. et L. Lokos, Gyalidea koreana J. P. Halda, S. Y. Kondr., L. Lokos et Hur, G. pisutii J. P. Halda, S. Y. Kondr., L. Lokos et Hur, G. poeltii S. Y. Kondr., L. Lokos, J. P. Halda et Hur, G. vezdae S. Y. Kondr., L. Lokos, J. P. Halda et Hur, and Porpidia ulleungdoensis S. Y. Kond., L. Lokos et J. P. Halda, as well as two new species from Japan (Fauriea yonaguniensis S. Y. Kondr., M. Moriguchi et Yoshik. Yamam. and Laundonia ryukyuensis S. Y. Kondr., M. Moriguchi et Yoshik. Yamam.), and one new species Lecanora orlovii S. Y. Kondr. et L. Lokos from Ukraine are described, illustrated and compared with closely related taxa. Key words: Bacidina, Fauriea, Gyalidea, Japan, Laundonia, Lecanora, new species, Porpidia, South Korea, Ukraine