Vassnebba or Grånebba is a mountain on the border of the municipalities of Sunndal and Surnadal in Møre og Romsdal county, Norway. It lies on the western border of the Trollheimen mountain range, just southwest of the Todalsfjorden and the village of Todalsøra and southeast of the village of Ålvund. The mountain is easily accessed from both sides, summer and winter.