Mazdak (ya mutu 524 ko 528) ya kasance mai kawo canji ne daga Farisa kuma mai rajin neman addini. Ya zama mai tasiri a ƙarƙashin mulkin Sassaniyya Shahanshah Kavadh I. Ya yi da'awar shi annabin Allah ne, kuma ya fara mallakar jama'a da shirye-shiryen jin daɗin jama'a. Shi ne babban wakili na tsarin koyarwar addini da ilimin halittar rayuwa da ake kira Mazdaki, wanda ake ganinsa a matsayin sabon fasalin addinin Zoroastra . Wasu mutane sunyi jayayya, koyarwarsa tana nuna tasiri daga Manichaeism kuma. Zoroastra shine babban addinin Sassaniyya a Persia. Mazdak firist na Zoroastrian ne. Yawancin limaman addinan Zoroastra suna ɗaukar koyarwarsa a matsayin bidi'a . Akwai bayanai kadan a game da Mazdakism. Koyarwar Khurramism ta samo asali ne daga Mazdakism kuma ana iya amfani da shi wajen faɗa ma wasu bayanai game da Mazdakism. Yarshater, Ehsan. 1983. The Cambridge history of Iran, volume 2. p.995-997 Shaki, Mansour. 1985. The cosmogonical and cosmological teachings of Mazdak. Papers in Honour of Professor Mary Boyce, Acta Iranica 25, Leiden, 1985, pp. 527-43. Yarshater, Ehsan. The Cambridge history of Iran, volume 2.