The Passeier Valley ( ; ) is the valley of the Passer river, in the mountains of South Tyrol, northern Italy. The Passer river is a left-bank tributary to the Adige. At the mouth of the valley, where the two rivers join, stands the town of Merano. From there, the valley runs north to the Timmelsjoch mountain pass, which leads to Sölden in the Ötztal valley of Austria and to the Jaufenpass which leads to Sterzing in the Wipptal.