The Mannheim–Weinheim railway is a metre-gauge railway between Mannheim-Neckarstadt-Ost/Wohlgelegen and Weinheim, mainly in the German state of Baden-Württemberg. It was built by the former Oberrheinischen Eisenbahn-Gesellschaft AG (Upper Rhine Railway Company, OEG), later MVV OEG AG and is now operated by MVV Verkehr GmbH (infrastructure owner) and RNV (operations manager and train operator) according to Eisenbahn-Bau- und Betriebsordnung für Schmalspurbahnen (narrow-gauge railway regulations; ESBO). However, the line is still owned by MVV Verkehr AG (the City of Mannheim's transport utility) as the successor to the OEG. It is operated as a branch line using electronic direct traffic control.