Bahnbetriebswerk Koblenz-Mosel, Railway maintenance facility in Koblenz, Germany.

The Bahnbetriebswerk Koblenz-Mosel was a railway depot on the Moselle line west of Koblenz Hauptbahnhof, between Goldgrube and Rauental. Its core was a 30-stall roundhouse with a turntable, of which 25 stalls remained before demolition. The site also held a water tower with water crane and ash pit, a coaling shed, a transformer house, a sanding plant and administrative buildings. The historic structures were demolished by 2007; since 2008 a Trans Regio workshop and depot has stood on the grounds.

The facility opened in 1900 after four years of construction and served as a locomotive maintenance center until its closure in 1988. After this shutdown, the site gradually lost its role as an active railway workshop and was eventually repurposed.

The depot's name comes from the Mosel line and the Moselweiß district where it stood. Its 30-track roundhouse and turntable made it a hub for steam locomotives until electrification of the Mosel line in 1973 ended steam operations. The site was cleared by 2007, and since 2008 Trans Regio has used the location for maintaining trains on the Left Rhine line.

The historic depot buildings were demolished by 2007; since 2008 a Trans Regio workshop and depot has operated on the site. The three signal boxes (Kof, Km, Kw) went out of service in 1995. A foot and cycle bridge is under construction on the east side of the station.

The depot was the main target of Allied air raids on Koblenz in World War II, and two bunkers were built on the grounds to shelter Reichsbahn workers during the attacks. Operations stopped completely on 7 March 1945, when retreating Wehrmacht units destroyed all bridges in Koblenz.