The Stuttgart-Bad Cannstatt–Nördlingen railway is a main line in Baden-Württemberg and Bavaria, Germany. It branches off the Stuttgart–Ulm railway at Stuttgart-Bad Cannstatt station and runs via Aalen to Nördlingen, where it merges with the Augsburg–Nördlingen railway. Between Bad Cannstatt and Goldshöfe, the line is part of the long-distance inter-regional connection between Stuttgart and Nuremberg. The line has two tracks from Bad Cannstatt to Goldshöfe and the remaining section is single track. The line is fully electrified and the western section from Stuttgart to Schorndorf is part of the Stuttgart S-Bahn.

The Fils Valley Railway designates the Württemberg line from Stuttgart via Göppingen to Ulm. It runs from Plochingen to Geislingen an der Steige through the Fils Valley.