Guido Westerwelle (27 December 1961 – 18 March 2016) was a German politician. He was Foreign Minister and Vice-Chancellor of Germany.
Westerwelle was born in Bad Honnef, North Rhine-Westphalia, Germany.
He was an attorney before he became a politician. From 1994 to 2001 he was secretary general of the German liberal party, the Freie Demokratische Partei (FDP). In 2001 he became the leader of the party.
Westerwelle was also the leader of the FDP parliamentary group and from 1999 to 2005 head of the opposition in the German Bundestag.
In June 2014, he announced that he had acute myeloid leukemia. He died of the disease on 18 March 2016 in Cologne, Germany at the age of 54.
He was openly gay and was in a civil partnership with sports manager Michael Mronz.