The Zürich–Zug–Luzern Railway (Zürich-Zug-Luzern-Bahn) is a former railway company that built railway lines in the Swiss cantons of Zürich, Zug and Lucerne from the 1860s. It was absorbed by the Swiss Federal Railways (SBB) in 1902. Its lines now form the Zürich–Zug railway (via Affoltern) and the Zug–Lucerne railway.