In the present communication 10 lichen species are reported as new records for India, viz. Byssoloma marginatum, Byssoloma xanthonicum, Chapsa boninensis, Coenogonium nepalense, Lecania cyrtella, Malmidea albomarginata, Myriotrema thailandicum, Myriotrema viride, Rostania occultata and Wirthiotrema duplomarginatum. Notably, B. marginatum, Malmidea albomarginata, R. occultata and W. duplomarginatum are documented as the first records for Asia. The lichens were collected from three districts of Arunachal Pradesh. These findings further enrich the lichen flora of Arunachal Pradesh. Keywords: Ascomycota, biodiversity, eastern Himalayas, lichenized fungi, taxonomy.