Chah-e Boniad Seduq (Persian: چاه بنياد صدوق‎‎, also Romanized as Chāh-e Bonīād Şedūq) is a village in Esfandar Rural District, Bahman District, Abarkuh County, Yazd Province, Iran. At the 2006 census, its existence was noted, but its population was not reported.