Astrochapsa is a genus of lichen-forming fungi in the subfamily Graphidoideae of the family Graphidaceae.

[1] The genus was circumscribed by Sittiporn Parnmen, Robert Lücking, and H. Thorsten Lumbsch in 2012, with Astrochapsa astroidea assigned as the type species.

It was segregated from the genus Chapsa, from which it differs in having a more frequently densely corticate thallus, an apothecial margin that is mostly recurved, and the almost exclusively subdistoseptate (with slightly thickened septa and angular lumina), non-amyloid ascospores.

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