Our third contribution to the checklist of Algerian fungi is dedicated to Labouls (Laboulbeniales, Laboulbeniomycetes) an a typical and very diversified group of microscopic fungi that unsure their nutrition and/or dispersal by being insect ectoparasites. By screening all available bibliographic sources and herbaria catalogues it was possible to delineate 66 species belonging to 26 genera that occurs in Algeria. Additionally a list of 8 erroneous or doubtful records unsupported by literature and/or herbarium material is provided. This checklist is the first comprehensive species list fully dedicated to Algerian Laboulbeniales.