WDR Big Band is the big band of Westdeutscher Rundfunk (WDR) in Cologne, Germany.

Westdeutscher Rundfunk Köln, shortened to WDR, is a German public-broadcasting institution based in the Federal State of North Rhine-Westphalia with its main office in Cologne. WDR is a constituent member of the consortium of German public-broadcasting institutions, ARD. As well as contributing to the output of the national television channel Das Erste, WDR produces the regional television service WDR Fernsehen and six regional radio networks.