Friedrich Wilhelm Sollmann, later William Frederick Sollmann (1 April 1881 – 6 January 1951) was a German journalist, politician, and interior minister of the Weimar Republic.
In 1919, he was on the staff of the German delegation that was to receive the Treaty of Versailles.
In 1933, he emigrated and eventually moved to the United States where he became an advocate for the peaceful resolution of conflicts.