Abatur (Classical Mandaic: ࡀࡁࡀࡕࡅࡓ, sometimes called Abathur; Yawar, Classical Mandaic: ࡉࡀࡅࡀࡓ; and the Ancient of Days) is an Uthra and the second of three subservient emanations created by the Mandaean God Hayyi Rabbi (Classical Mandaic: ࡄࡉࡉࡀ ࡓࡁࡉࡀ, “The Great Living God”) in the Mandaean religion. His name translates as the “father of the Uthras”, the Mandaean name for angels or guardians. His usual epithet is the Ancient (Atiga) and he is also called the deeply hidden and guarded. He is described as being the son of the first emanation, or Yoshamin (Classical Mandaic: ࡉࡅࡔࡀࡌࡉࡍ‎). He is also described as being the angel of Polaris.

He exists in two different personae. These include Abatur Rama (Classical Mandaic: ࡀࡁࡀࡕࡅࡓ ࡓࡀࡌࡀ, the "lofty" or celestial Abatur), and his "lower" counterpart, Abatur of the Scales (Classical Mandaic: ࡀࡁࡀࡕࡅࡓ ࡌࡅࡆࡀࡍࡉࡀ, romanized: Abatur Muzania), who weighs the souls of the dead to determine their fate. In Mandaean texts such as the Qolasta, Abatur is sometimes referred to as Bhaq Ziwa.