This open access publication is released under the "CC BY NC" license. Download paper for free For institutions and libraries which require a printed version of this work, we offer a high quality printed and bound paper edition, which may be ordered online above. This option (OA plus a printed edition) is available to all authors of Bibliotheca Lichenologica from now on. Publications on the lichens of Alaska go back 182 years, but a modern, comprehensive review of literature on the diversity of Alaskan lichens has been lacking. The authors present a compendium of 2126 accepted taxa fully referenced with published reports from Alaska and their exact localities. Of these 2126 taxa, 1827 are lichen fungi, 277 are lichen-associated fungi and 22 are putatively saprotrophic fungi usually treated in lichenological studies. Nearly half of all species have been first reported since 1997. A total of 1594 names are treated as synonyms or misapplications, and 140 further taxa are excluded as erroneous or doubtful.