An uthra or ʿutra (ࡏࡅࡕࡓࡀ, Neo-Mandaic oṯrɔ, traditionally transliterated eutra; plural: ʿuthrē, traditionally transliterated eutria) is a "divine messenger of the light" in Mandaeism. Charles G. Häberl and James F. McGrath translate it as "excellency". Jorunn Jacobsen Buckley defines them as "Lightworld beings, called 'utras (sing.: 'utra 'wealth', but meaning 'angel' or 'guardian')." Aldihisi (2008) compares them to the yazata of Zoroastrianism. According to E. S. Drower, "an 'uthra is an ethereal being, a spirit of light and Life."
Uthras are benevolent beings that live in škinas (ࡔࡊࡉࡍࡀ, "celestial dwellings") in the World of Light (alma ḏ-nhūra) and communicate with each other via telepathy. Uthras are also occasionally mentioned as being in anana ("clouds"; e.g., in Right Ginza Book 17, Chapter 1), which can also be interpreted as female consorts. Many uthras also serve as guardians (naṭra); for instance, Shilmai and Nidbai are the guardians of Piriawis, the Great Jordan (yardna) of Life.
Uthra is typically considered to be cognate with the Aramaic ʿuṯrā ‘riches’, derived from the Semitic root *w-t-r ‘to exceed’. Based on that etymology, E. S. Drower suggests a parallel with the South Arabian storm god Attar, who provides irrigation for the people.
However, that etymology is disputed by Charles G. Häberl (2017), who suggests it is the ʾaqtal pattern noun *awtərā "excellency".
Uthras often have the term Ziwa / Ziua (ࡆࡉࡅࡀ "Radiance') attached after their names, due to their origins from the World of Light. In Manichaeism, the Syriac term Ziwa (ܙܝܘܐ) is also used to refer to Jesus as Ishoʿ Ziwā (ܝܫܘܥ ܙܝܘܐ, Jesus the Splendor), who is sent to awaken Adam and Eve to the source of the spiritual light trapped within their physical bodies.
Pairs of uthras also typically have rhyming names. The names can be alliterative (e.g., Adathan and Yadathan), or one name may have an infixed consonant or syllable (e.g., Kapan and Kanpan). In Manichaeism, pairs of celestial beings can also have rhyming names, such as Xroshtag and Padvaxtag.