Gråhø or Gråhøe is a mountain in Lesja Municipality in Innlandet county, Norway. The 2014 m tall mountain is the tallest mountain within Reinheimen National Park. The mountain lies about 20 km southwest of the village of Lesjaskog. The mountain is surrouneded by several other mountains including Løyfthøene which lies about 2 km to the east, Skarvedalseggen and Stamåhjulet which are about 3 km to the southwest, Blåhøe which lies about 2 km to the northwest, Digerkampen which lies about 7 km to the north, and Holhøi which lies about 4 km to the northeast.