The sculptor squirrel or Bornean pygmy squirrel (Glyphotes simus) is a species of rodent in the family Sciuridae. It is monotypic within the genus Glyphotes. It is endemic to Malaysia and inhabits areas elevated at 600–1700 m. The body is 95 to 145 mm long, and the tail length is approximately 100 mm. The chest, undersurface, sides of the nose, margins of the ears and dorsal surface of the digits are yellow, whereas the tip of the tail is black.