List of Famous people named Julius

Julius Constantius was a politician of the Roman Empire and a member of the Constantinian dynasty, being a son of Emperor Constantius Chlorus and his second wife Flavia Maximiana Theodora, a younger half-brother of Emperor Constantine the Great and the father of Emperor Julian.

Julius Ernest, Duke of Brunswick and Lunenburg (1571–1636), Prince of Dannenberg, was a son of Henry III, Duke of Brunswick-Lüneburg and Ursula of Saxe-Lauenburg. On his father's death in 1598 he inherited the Principality of Dannenberg. He died without male issue, and so the Dannenberg principality and his share of Hitzacker was inherited by his brother Augustus.

Julius Engelbert Röntgen was a German-Dutch composer of classical music.

Sir Johann Franz Julius von Haast was a German-born New Zealand explorer, geologist, and founder of the Canterbury Museum in Christchurch.

Julius Francis was duke of Saxe-Lauenburg between 1666 and 1689. He was a son of Duke Julius Henry and his third wife Anna Magdalena of Lobkowicz, daughter of Baron William the Younger Popel of Lobkowicz. He was officially known as Julius Franz von Sachsen, Engern und Westfalen.