The present study enumerates the diversity of corticolous lichens from Kokrajhar district of Assam state. The study records 54 species of lichens belonging to 21 genera and 14 families. Majority of the species are crustose (44 species) and 10 are foliose. One of the species, Astrothelium alboverrucoides is a new record to India while five species viz., Graphis sayeri, Hemithecium croceum, Malmidea piperis, Ocellularia allosporoides and Porina belanospora are new additions toS the lichen biota of Assam. Among the species, nine are endemic to India. Graphidaceae is the dominant family and Dirinaria consimilis is frequently found in all the study sites. This indicates its scope for future applications in other studies related to lichens in the region. Keywords: Corticolous, Enumeration, Ultapani Forest range, University campus.