'''ウルスラグナ'''(Vərəθraγna)とは、ゾロアスター教において崇拝される英雄神<ref name="Kuehn2011">Sara Kuehn, The Dragon in Medieval East Christian and Islamic Art: With a Foreword by Robert Hillenbrand, https://books.google.com/books?id=AZWgdBCgmLYC, 12 July 2011, BRILL, isbn:978-90-04-18663-7, page103</ref><ref name="Fragner1995">Bert G. Fragner, Proceedings of the Second European Conference of Iranian Studies: Held in Bamberg, 30th September to 4th October 1991, by the Societas Iranologica Europaea, https://books.google.com/books?id=-y46AQAAMAAJ, 1995, Istituto italiano per il Medio ed Estremo Oriente</ref>。
中性名詞verethragnaは、アヴェスター語のverethra「障害」、verethragnan「勝利」に関連するものである<ref>Gnoli, 1989, p510</ref>。その代表が「勝利」の神格であるヴェレストラグナであり、「勝利をもたらす神として、ヴェレストラグナは古来最高の人気を誇っていた」のである<ref>Boyce, 1975, p63</ref>。
The neuter noun ''verethragna'' is related to Avestan ''verethra'', 'obstacle' and ''verethragnan'', 'victorious'. Representing this concept is the divinity Verethragna, who is the [[Hypostasis (linguistics)|hypostasis]] of "victory", and "as a giver of victory Verethragna plainly enjoyed the greatest popularity of old."{{sfn|Boyce|1975|p=63}} In Zoroastrian Middle Persian, Verethragna became 𐭥𐭫𐭧𐭫𐭠𐭭 Warahrām, from which Vahram, Vehram, Bahram, Behram and other variants derive.
The word is cognate with the [[Vedic Sanskrit]]. The Vedic god [[Indra]] may correspond to Verethragna<!-- (Benveniste & Renou, Charpentier, de Manesce) --> of the Zoroastrian Avesta as the Vedic vr̥tragʰná-, which is predominantly an epithet of Indra, corresponds to the noun verethragna-.