The Neu-Ulm–Kempten railway is a mostly single track and non-electrified main line from Neu-Ulm via Memmingen to Kempten in the German state of Bavaria. It follows the Iller river for its entire length and is therefore also called the Iller Valley Railway (). The line from Neu-Ulm to Kellmünz is integrated in the Donau-Iller-Nahverkehrsverbund (Danube-Iller Local Transport Association, DING). It is listed in the timetable under the number of 975; between New Ulm and Memmingen it is also served by services running on route 756.
