Trollstigen (English: The Troll Ladder) is a mountain road in Rauma, Norway, part of Norwegian National Road 63 connecting Andalsnes in Rauma and Valldal in Norddal. It is a popular tourist attraction due to its steep incline of 9% and eleven hairpin bends up a steep mountain side. Trollstigen was opened on July 31, 1936, by King Haakon VII after 8 years of construction.

Trollstigen is closed during the fall and winter months. A normal opening season stretches from the middle of May to October, but may sometimes be shorter or longer due to changes in the weather conditions, or unexpected trolls of course.
In the summer of 2005 the road was repaired and about 16 million NOK was spent on protection against rockfall, making the road a lot safer to drive on