This is a list of genera in the Ascomycota phylum of fungi with uncertain taxonomic placement (incertae sedis). These genera have not yet been assigned to any class, order, or family. The list is based on the 2007 Outline of Ascomycota as well as updates made in the literature since then. Certain genera (marked as tentative) have a tentavive placement in the Ascomycota, and have been placed here provisionally pending further study.