The Koralionastetaceae are a family of fungi in the Ascomycota division. This family was taxonomically classified into class of Sordariomycetes and order of Koralionastetales and subclass Lulworthiomycetidae.
It contained the genus Koralionastes (and its 5 species) and then Pontogeneia was added later. Then in 2009, monotypic order Koralionastetales was published to hold the family.