Zoroaster (Greek ??????????, Z?roastr?s) or Zarathustra (Avestan: Zara?u?tra), also referred to as Zartosht ( ; Kurdish: ), was an ancient Iranian prophet and religious poet. The hymns attributed to him, the Gathas, are at the liturgical core of Zoroastrianism.The personNameAvestan ZarathustraAvestan Zara?u?tra is generally accepted to derive from an Old Iranian *zarat-u?tra-, which is in turn ?perhaps?. a zero-grade form of *zarant-u?tra-. This is supported by reconstructions