The hairy long-nosed armadillo, or woolly armadillo, (Dasypus pilosus) is a species of armadillo in the family Dasypodidae. It is endemic to Peru. Its natural habitats are subtropical or tropical, moist, lowland forests and subtropical or tropical, moist montane forests. The International Union for Conservation of Nature used to consider it a "vulnerable species" but has changed this assessment to "data deficient" because so little is known about the animal and the threats it faces.