The Annulatascaceae are a family of fungi in the monotypic order Annulatascales of the class Sordariomycetes of the Ascomycota.

[1] The family had not been assigned to any order,[2] until 2020 when it was placed with a new order Annulatascales M.J. D'souza, Maharachch.

[3] Species in this family are saprobic, often found growing on rotten wood in freshwater habitats.

They have a widespread distribution, with many found in tropical areas.

[4] As accepted by Wijayawardene et al. 2020, 13 genera;[3] This Sordariomycetes-related article is a stub.