Prince Friedrich Wilhelm of Prussia (German: Friedrich Wilhelm Viktor Karl Ernst Alexander Heinrich Prinz von Preußen; 12 July 1880 – 9 March 1925) was a member of the House of Hohenzollern, great-grandson of King Frederick William III of Prussia.

During his youth, he spent time in Berlin, also at his grandmother's Reinhartshausen Castle in Erbach and in Brunswick, where his father served as regent.

In 1912, was elected Landrat of Frankenstein District, where it remained until 1918, until the abolition of the German monarchy and the establishment of the Weimar Republic.

Much of the time he traveled through Europe and the world, sometimes in important diplomatic missions, representing Emperor Wilhelm II.

After the war and the establishment of the republic in Germany, Friedrich Wilhelm became involved with the monarchists, proposing the restoration of the German Empire.