Geoplana piratininga is a species of land planarian belonging to the subfamily Geoplaninae.

[1] It is found in areas within the Atlantic Forest in the municipalities of São Paulo and Mongaguá, Brazil.

The dorsal side has a traffic-red band running down the middle, bounded on each side by a black stripe; the stripe is bordered by a white stripe, which is in turn bordered by a black band, which is then bordered by a thin marginal white line.

[2] Aside from its coloration, it is distinguished from other members of Geoplana by having the dorsal and ventral insertions of the penis papilla at the same transverse plane, non-folded walls of the female atrium, and a female-to-male atrium length ratio of 2.

[2] The specific epithet, piratininga, is derived from the historical Tupi language name of the type locality of São Paulo, Piratininga plains.