Nebuchadnezzar II, also Nebuchadrezzar II, meaning "Nabu, watch over my heir", was the second king of the Neo-Babylonian Empire, ruling from the death of his father Nabopolassar in 605 BC to his own death in 562 BC. Often titled Nebuchadnezzar the Great, he is regarded as the empire's greatest king, famous for his military campaigns in the Levant and their role in Jewish history, and for his construction projects in his capital of Babylon, including the Hanging Gardens of Babylon. Ruling for 43 years, Nebuchadnezzar was the longest-reigning king of the Babylonian dynasty. By the time of his death, he was among the most powerful rulers in the world.

Nebuchadnezzar III, alternatively spelled Nebuchadrezzar III and also known by his original name Nidintu-Bêl, was a rebel king of Babylon in late 522 BC who attempted to restore Babylonia as an independent kingdom and end the rule of the Persian Achaemenid Empire in Mesopotamia. A Babylonian noble of the Zazakku family and the son of a man by the name of Mukīn-zēri or Kîn-Zêr, Nidintu-Bêl took the regnal name Nebuchadnezzar upon his accession to the Babylonian throne and claimed to be a son of Nabonidus, Babylon's last independent king.

Nebuchadnezzar II's Prism, also known as the Hofkalender, EŞ 7834, The Court of Nebuchadnezzar, the Unger Prism, Nebuchadnezzar's Court Calendar, the Phillipps Cylinder, Nbk Zyl III,4, C34, and Nr. 9, is an artifact from the Neo-Babylonian Empire. The text is similar to, but different from, the Nebuchadnezzar cylinder C34, also known as the Middle Hill cylinder.