Leptodactylus discodactylus (common name: Vanzolini's Amazon frog) is a species of frog in the family Leptodactylidae. It is found in the Amazonian Bolivia, Brazil (Amazonas and Acre states), Peru, Ecuador, and Colombia.
Leptodactylus discodactylus is a medium-sized, moderately robust-bodied frog. Males measure 28mm35mm and females 32mm35mm in snout–vent length. The colouration is reddish brown, with paler flanks. The dorsum is smooth with some small tubercles. The fingers may or may not have disks, whereas the toes end in slightly expanded and rounded disks. The species shows local-scale variation in colour pattern, morphology, and advertisement call.
Leptodactylus discodactylus is a reasonably common and generally widespread species active by day and night. It can be found on the forest floor and in swampy areas in the forest, seasonally flooded forests, and open areas. The eggs are laid close to water where the tadpoles develop.
Leptodactylus discodactylus is locally suffering from habitat loss.