Vishtaspa (Avestan: 𐬬𐬌𐬱𐬙𐬁𐬯𐬞𐬀‎ "Vištāspa"; Old Persian:𐎻𐏁𐎫𐎠𐎿𐎱 "Vištāspa"; modern Persian: گشتاسپ "Guštāsp"; Ancient Greek" Ὑστάσπης "Hystaspes") is the Avestan-language name of a figure of Zoroastrian scripture and tradition, portrayed as an early follower of Zoroaster, and his patron, and instrumental in the diffusion of the prophet's message. Although Vishtaspa is not epigraphically attested, he is – like Zoroaster also – traditionally assumed to have been a historical figure, and – again, like Zoroaster – that figure is obscured by accretions from legend and myth.