The Deggendorf—Metten railway was a local Bavarian branch line (Lokalbahn) in southern Germany.

It was established by the Aktiengesellschaft der Lokalbahn Deggendorf-Metten, a railway company in eastern Bavarian that built and operated this standard gauge line between the two towns.

The company was founded, on the one hand, to provide a railway link to the town of Metten, well known for its monastery (Kloster Metten) and, on the other hand, to export stone from the granite quarries in the surrounding area.

The line was taken over on 1 February 1928 by the Regentalbahn AG who continued to operate it.

Goods traffic ceased in 1991 and on 1 August 1993 the line was finally closed.