Seh Boni (Persian: سه بني, also Romanized as Seh Bonī; also known as Sabūnī) is a village in Jolgeh-ye Chah Hashem Rural District, Jolgeh-ye Chah Hashem District, Dalgan County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 104, in 18 families.