Bundesautobahn 573 (translates from German as Federal Motorway 573, short form Autobahn 573, abbreviated as BAB 573 or A 573) is an autobahn in Germany. It leads from the A 61 through Bad Neuenahr and ends behind Bad Neuenahr at a provisional connection. The extension to Linz am Rhein with a bridge is planned, but will be realized as the Bundesstraße 266.
The A 573 was originally planned as the southern end of the A 31.
