Alphane is a bouldering route in Chironico, Switzerland. It is graded at , making it one of the hardest boulders in the world.
Alphane sits to the left of Dave Graham's Alphane Moon , and was discovered by Graham many years before its first ascent by American climber Shawn Raboutou on the 6th April, 2022. Within the following 9 months it had been repeated by three more climbers.