Xenodon neuwiedii, also known commonly as Neuwied's false fer-de-lance, is a species of snake in the subfamily Dipsadinae of the family Colubridae. The species is native to eastern central South America.
The specific name, neuwiedii, is in honor of German naturalist Prince Maximilian of Wied-Neuwied.
Xenodon neuwiedii is found in extreme northeastern Argentina, southeastern Brazil, and southeastern Paraguay.
The preferred natural habitat of Xenodon neuwiedii is forest.
Xenodon neuwiedii is terrestrial and diurnal.
Xenodon neuwiedii preys predominately upon toads, but also upon other frogs.
Xenodon neuwiedii is oviparous.