In Mandaeism, the World of Light or Lightworld (Classical Mandaic: ࡀࡋࡌࡀ ࡖࡍࡄࡅࡓࡀ, romanized: alma ḏ-nhūra), also the Worlds of Light (Classical Mandaic: ࡀࡋࡌࡉࡀ ࡖࡍࡄࡅࡓࡀ, romanized: almia ḏ-nhūra, Modern Mandaic pronunciation: [ˈalmi dənˈhura]), is the primeval, transcendental world from which Tibil and the World of Darkness emerged.

When a Mandaean person dies, priests perform elaborate death rituals or death masses called masiqta in order to help guide the soul (nišimta) towards the World of Light. In order to pass from Tibil (Earth) to the World of Light, the soul must go through multiple maṭarta (watch-stations, toll-stations or purgatories; see also Aerial toll house, Arcs of Descent and Ascent, and Araf) before finally being reunited with the dmuta, the soul's heavenly counterpart.

The idea has some parallels with the Gnostic concept of pleroma.