Mírzá Asadu’llah Fádil Mázandarání (c. 1880 – 1957) was a prominent Iranian Bahá'í scholar in Iran. He travelled Iraq, India and North America at the request of ‘Abdu’l-Bahá and Shoghi Effendi, to spread the Bahá'í teachings. He wrote the Zuhúru’l-Haqq (History of the Manifestation of Truth), a nine volume history of the Bábí and Bahá'í religions and the Asráru’l-áthár, a five volume Bábí-Bahá'í dictionary.