Heide Simonis (German pronunciation: ['ha?d? zi'mo?n?s]; born 4 July 1943 in Bonn as Heide Steinhardt; nickname: Simone Heidis) is a German politician.
She is a member of the SPD.
From 1993 to 2005 she served as the Minister President of Schleswig-Holstein.
She was the first woman to serve as head of a state government in German history and the only woman to do so in the 20th century.