Gondophares I (Greek: Γονδοφαρης Gondopharēs, Υνδοφερρης Hyndopherrēs; Kharosthi: 𐨒𐨂𐨡𐨥𐨪 , ; 𐨒𐨂𐨡𐨥𐨪𐨿𐨣 , ; 𐨒𐨂𐨡𐨂𐨵𐨪 , ) was the founder of the Indo-Parthian Kingdom and its most prominent king, ruling from 19 to 46. He probably belonged to a line of local princes who had governed the Parthian province of Drangiana since its disruption by the Indo-Scythians in c. 129 BC, and may have been a member of the House of Suren. During his reign, his kingdom became independent from Parthian authority and was transformed into an empire, which encompassed Drangiana, Arachosia, and Gandhara. He is generally known from the Acts of Thomas, the Takht-i-Bahi inscription, and silver and copper coins bearing his visage.
He was succeeded in Drangiana and Arachosia by Orthagnes, and in Gandhara by his nephew Abdagases I.
The name of Gondophares was not a personal name, but an epithet derived from the Middle Iranian name 𐭅𐭉𐭍𐭃𐭐𐭓𐭍, Windafarn (Parthian), and 𐭢𐭥𐭭𐭣𐭯𐭥, Gundapar (Middle Persian), in turn derived from the Old Iranian name 𐎻𐎡𐎭𐎳𐎼𐎴𐎠 (Vindafarnâ, "May he find glory" (cf. Greek Ἰνταφέρνης, Intaphernes)), which was also the name of one of the six nobles that helped the Achaemenid king of kings (shahanshah) Darius the Great (522 BC-486 BC) to seize the throne. In old Armenian, it is "Gastaphar". "Gundaparnah" was apparently the Eastern Iranian form of the name.
Ernst Herzfeld claims his name is perpetuated in the name of the Afghan city Kandahar, which he founded under the name Gundopharron.
Gondophares may have been a member of the House of Suren, one of the most esteemed families in Arsacid Iran, that not only had the hereditary right to lead the royal military, but also to place the crown on the Parthian king at the coronation. In c. 129 BC, the eastern portions of the Parthian Empire, primarily Drangiana, was invaded by nomadic peoples, mainly by the Eastern Iranian Saka (Indo-Scythians) and the Indo-European Yuezhi, thus giving the rise to the name of the province of Sakastan ("land of the Saka").