This study is a contribution to the lichen biota of Turkey. A total of 360 taxa (324 lichens, 29 lichenicolous fungi and seven lichenicolous lichens) have been identified from 124 sites in the Batman Province of Turkey. Of these, 291 lichens, 28 lichenicolous fungi and six lichenicolous lichens are new records for the Batman Province. Lobothallia parasitica, a lichenicolous lichen, is new to Turkey. Seven lichens (Candelariella oleifera, Circinaria scabridula, Clavascidium lacinulatum, Johnsheardia zwackhiana, Miriquidica leucophaea, Sarcogyne platycarpoides and Staurothele bacilligera) and one lichenicolous fungus (Lichenochora verrucicola) have been recorded for the second time from Turkey. Keywords: Ascomycota, biodiversity, lichens, new records.