Hyloxalus alessandroi is a species of frog in the family Dendrobatidae. It is endemic to Peru where it is known from the Cusco and Puno Regions. Its natural habitats are tropical moist montane forest and rivers. It is threatened by habitat loss. References alessandroi Amphibians of Peru Endemic fauna of Peru Taxonomy articles created by Polbot Amphibians described in 2001