Allographa uruguayensis is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae.

[1] He had previously informally introduced the species as Graphis uruguayensis in a 2009 publication,[2] but without a proper description.

The type specimen was collected in 1968 by Henry Imshaug in Parque Franklin Delano Roosevelt, near Montevideo; here it was found in a planted grove containing Pinus and Eucalyptus.

The lichen has a pale yellow-grey thallus, measuring 2–3 cm (0.8–1.2 in) across and 50–70 μm thick, which lacks a prothallus.

Allographa elongata is somewhat similar in morphology, but is distinguished by differences in the structure of the lirellae, and in ascospore width.