Records of 32 lichen species new to the island of Sakhalin are reported. One of them — Physcia dimidiata (Arnold) Nyl. is new to the Russian Far East. New species for the Sakhalin island are Buellia dives Th. Fr., Flavopunctelia soredica (Nyl.) Hale, Heterodermia dissecta (Kurok.) D. D. Awasthi, H. microphylla (Kurok.) Skorepa, H. pseudospeciosa (Kurok.) W. L. Culb. var. tremulans (Müll. Arg.) Kurok., Hypogymnia arcuata Tchaban. et McCune, Lasallia pensylvanica (Hoffm.) Llano, Lecanora hagenii (Ach.) Ach., Lepraria incana (L.) Ach., Leptogium asiaticum P. M. Jørg., Melanelia hepatizon (Ach.) A. Thell, Mycoblastus sanguinarioides Kantvilas, Myelochroa entotheiochroa (Hue) Elix et Hale, M. metarevoluta (Asahina) Elix et Hale, M. subaurulenta (Nyl.) Elix et Hale, Nephroma parile (Ach.) Ach., Oxneria huculica S. Y. Kondr., Parmelia praesquarrosa Kurok., Peltigera collina (Ach.) Schrad., Pertusaria amara (Ach.) Nyl., Physcia adscendes (Fr.) H. Olivier, P. dimidiatа, Physconia grumosa Kashiw. et Poelt, P. kurokawae Kashiw., P. lobulifera Kashiw., Pyrenula japonica Kurok., Ramalina asahinana Zahlbr., Schismatomma pericleum (Ach.) Branth et Rostr., Usnea lapponica Vain., Vahliella leucophaea (Vahl) P. M. Jørg., Xanthoparmelia conspersa (Ehrh. et Ach.) Hale, X. stenophylla (Ach.) Ahti et D. Hawksw. Heterodermia microphylla in the south of the Russian Far East more often is sorediate. The form with soredia was registered earlier as Anaptychia hypoleuca (Mühl.) A. Massal. var. microphila Kurok. f. granulosa (Kurok.) Kurok. Mycoblastus sanguinarioides is very common in Sakhalin and prevails in collections of the genus. Altogether 386 species of lichens are known for the island of Sakhalin nowadays.