The Tour d'Aï is a mountain in the western Bernese Alps , overlooking Leysin in the canton of Vaud . It is located near the Tour de Mayen , on the range lying between the Rhone and Col des Mosses , south of Lake Geneva , from where both summits can be easily seen.

The summit can be accessed via a trail on its northern slopes, from the alp of Aï, near the Berneuse , above Leysin.