Bahá'u'lláh (12 November 1817 – 29 May 1892), born Mírzá Ḥusayn-`Alí Núrí, is the founder of the Bahá'í Faith.

He claims to be the prophetic fulfillment of Bábism, a 19th-century outgrowth of Shí‘ism, but in a broader sense claimsto be a messenger from God referring to the fulfilment of the eschatological expectations of Islam, Christianity, and other major religions.

Bahá'u'lláh teaches that humanity is one single race and that the age has come for its unification in a global society.

His claim to divine revelation results in persecution and imprisonment by the Persian and Ottoman authorities, and his eventual 24-year confinement in the prison city of `Akka, Palestine (present day Israel), where he dies.

He writes many religious works, most notably the Kitáb-i-Aqdas and the Kitáb-i-Íqán.

There are two known photographs of Bahá'u'lláh.

Outside of pilgrimage, Bahá'ís prefer not to view his photo in public, or even to display it in their private homes.