Carl-Friedrich Arp Ole Freiherr von Beust, generally called Ole von Beust, born 13 April 1955, in Hamburg, Germany, was Ole von Beust First Mayor of the Free and Hanseatic City of Hamburg () from 31 October 2001 to 25 August 2010, serving as President of the Bundesrat from 1 November 2007 on for one year. He was followed as mayor by Christoph Ahlhaus.