165 taxa of lichens are reported from three localities in Johannes V. Jensen Land in N Greenland. Their associations are briefly indicated. Cladonia libifera and Parmelia skultii are new to Greenland. 130 taxa are new to Johannes V. Jensen Land. Geology and climate of the area are described. The lichen flora is fairly rich in spite of the extremely unfavourable climatic conditions prevailing in this northernmost land area on earth.