Gustav Friedrich Hertzberg (19 January 1826, Halle - 16 November 1907, Halle), was a German historian and publicist.
Gustav Friedrich Hertzberg was the eldest son Gustav Ludwig Hertzberg and his wife, the former Friederike Bucholz. He studied theology at the University of Halle-Wittenberg. In the fall of 1844 he earned a degree in classics and related topics from the University of Leipzig. In 1851 he earned his Habiliation from the University of Halle-Wittenberg in ancient history. Among his professor there had been Gottfried Bern Hardy and Heinrich Leo. In 1854 he joined a Masonic Lodge. He was a member of the National Liberal Party. By the late 1850s he was working in Berlin.
On his death Hertzberg was survived by his second wife, Auguste Ziebarth, who he married in 1862. His first wife, Rosalie Carpenter, died in 1859 in child-birth.
Hertzberg wrote primarily on the history of Ancient Greece and the Byzantine Empire.
Much of this is based on a preliminary translation of the German wikipedia article on Hertzberg. There is much more to be translated.