The Annulatascaceae are a family of fungi in the class Sordariomycetes of the Ascomycota. The family has not been assigned to any order (incertae sedis). Species in this family are saprobic, often growing on rotten wood in freshwater habitats. They have a widespread distribution, with many found in tropical areas.

The Annulatascaceae are a family of fungi in the class Sordariomycetes of the Ascomycota. The family has not been assigned to any order (incertae sedis). Species in this family are saprobic, often growing on rotten wood in freshwater habitats. They have a widespread distribution, with many found in tropical areas.