Female Sanford's Brown Lemur in habitat, Amber Mountain, Madagascar

Sanford's brown lemur, or Sanford's lemur, is a species of strepsirrhine primate in the family Lemuridae. Sanford's brown lemur was previously considered a subspecies of the common brown lemur but was raised to full species in 2001. It is named after Leonard Cutler Sanford, a trustee of the American Museum of Natural History.