Koblenzer Brauerei (formerly Königsbacher Brauerei GmbH & Co KG) was a brewery in Koblenz, in the Rhineland-Palatinate state of Germany.

Since its foundation in 1689, it had a tradition of brewing beer in the Old Brewery (Altes Brauhaus) in the historic center of Koblenz.

The brewery was sold and re-incorporated in 2012, the brand Königsbacher was abolished and the beer sold under the new brand Koblenzer.

[1] The brewery again entered insolvency proceedings in November 2023, and, since no new investors could be found, was finally shut down on January 31, 2024.

[1] The former name comes from a small river near Koblenz named Königsbach (King's Brook), whose clear water was suitable for brewing beer: "Königsbacher" is German for "from the Königsbach" (from the King's Brook).