Leptodactylus wagneri (common name: Wagner's white-lipped frog) is a species of frog in the Leptodactylidae family. It is found in northern South America (Brazil, Colombia, Ecuador, and Peru). Leptodactylus wagneri are found in a variety of habitats, usually not far from water: clearings, marshes and swamps, primary forest, secondary forest, terra firme forest, flooded forest, streams, and lakes. Eggs are laid in foam nests in standing water. Male Leptodactylus wagneri grow to a snout–vent length of 39–61 mm (1.5–2.4 in) and females to 52–82 mm (2.0–3.2 in).