The paper enumerates 108 species representing 35 genera of lichens found growing on twelve major tree species and other substrates in thirteen forest sites of Corbett Tiger Reserve, Uttaranchal, India. It also includes a comparative account of lichens growing on different phorophytes. The Syzygium cumini trees bear the maximum number of lichen species, represented by 64 species, followed by Shorea robusta, Mallotus philippensis, Murraya koenigii and Mangifera indica by 27, 21, 8 and 7 species respectively. Among the various localities of the Reserve, the Dugadda area has maximum diversity of 29 lichen species, followed by Chuhi, Sultan and Sandikhal by 19, 18 and 15 species respectively. Cryptothecia lunulata (Zahlbr.) Makh. & Patw., is the most common lichen of the Reserve, grows almost on all the trees. There is a dominance of crustose lichens, represented by 89 species while only 21 foliose lichens are known from the Reserve.