Julius Rudolph Ottomar Freiherr von Minutoli (30 August 1804, in Berlin – 5 November 1860, in Khaneh Zanian Caravanserai, near Shiraz, Persia) was a Prussian chief of police, diplomat, scientist, and author, as well as a gifted draughtsman.
Because the family has lived since 1810 in the royal palace of Unter den Linden, Julius von Minutoli had personal contact early in life with Carl and with the crown prince, later Friedrich Wilhelm IV.
As a result of an official trip through Europe and North Africa, he published in 1843 a work called "Die neuen Straf- und Besserungssysteme" on the new punishment and rehabilitation systems that he had seen in Algeria, Spain, Portugal, England, France and Holland.
He died on 5 November 1860 during a business trip to the Persian Gulf in a Caravanserei in Shiraz, probably of cholera, and was buried in the cemetery of the Armenian Christian community there.
He maintained extensive correspondence, among others, with the "Prussian Court-Modeller" in Bamberg Carl Schropp, the collector Emil Freiherr Marschalk von Ostheim and the archivist Paul Oesterreicher.