Gassicurtia is a genus of lichenized fungi in the family Caliciaceae.

[1] The genus was circumscribed by French botanist Antoine Laurent Apollinaire Fée in Essai Crypt.

[2] The genus name of Gassicurtia is in honour of Louis Claude Cadet de Gassicourt (1731–1799) who was a French chemist who synthesised the first organometalic compound.

[3] It was later resurrected by Bernhard Marbach in his 2000 monograph on Buellia sensu lato.

The genus contains species that are part of the tropical Buellia group with 2-celled ascospores, and which lack algae in the margin.