The splash-back poison frog (Ranitomeya variabilis), also referred to as the variable poison frog or Zimmermann's poison frog, is a small species of poison dart frog known from the upper Huallaga River drainage of San Martín Region, Peru. It is semi-arboreal, living in the forest understory and canopy. Like other poison frogs, it contains alkaloid poisons. The mimic poison frog is a Müllerian mimic of this species. The species was formerly considered to be synonym of Ranitomeya ventrimaculata.