National level

• Vacant to 11 February, then Friedrich Ebert
  Friedrich Ebert
  Friedrich Ebert was a German politician of the Social Democratic Party of Germany .When Ebert was elected as the leader of the SPD after the death of August Bebel, the party members of the SPD were deeply divided because of the party's support for World War I. Ebert supported the Burgfrieden and...
  
   (Social Democrats
  Social Democratic Party of Germany
  The Social Democratic Party of Germany is a social-democratic political party in Germany...
  
  )

• Friedrich Ebert
  Friedrich Ebert
  Friedrich Ebert was a German politician of the Social Democratic Party of Germany .When Ebert was elected as the leader of the SPD after the death of August Bebel, the party members of the SPD were deeply divided because of the party's support for World War I. Ebert supported the Burgfrieden and...
  
   (Social Democrats) ("Head of Government") to 11 February, then Philipp Scheidemann
  Philipp Scheidemann
  Philipp Scheidemann was a German Social Democratic politician, who proclaimed the Republic on 9 November 1918, and who became the second Chancellor of the Weimar Republic....
  
   (Social Democrats) to 20 June, then Gustav Bauer
  Gustav Bauer
  ' was a German Social Democratic Party leader and Chancellor of Germany from 1919 to 1920.Born in Darkehmen near Königsberg in East Prussia, Bauer, who rose to notice through his leadership of a white-collar trade union, served from 1908 to 1918 as chairman of the General Commission of Trade...
  
   (Social Democrats)

Deaths

• 15 January — Rosa Luxemburg
  Rosa Luxemburg
  Rosa Luxemburg was a Marxist theorist, philosopher, economist and activist of Polish Jewish descent who became a naturalized German citizen...
  
  , German politician (b. 1871
  1871 in Germany
  -National level:* Kaiser — William I* Chancellor - Otto von Bismarck-Kingdoms:* King of Bavaria — Ludwig II of Bavaria* King of Prussia — Kaiser William I* King of Saxony — John of Saxony...
  
  )