Sar Asiab (, also Romanized as Sar ÃÂsëÃÂb; also known as Darb-e ÃÂsyÃÂb-e BÃÂd) is a village in Emamzadeh Aqaali Abbas Rural District, Emamzadeh District, Natanz County, Isfahan Province, Iran. At the 2006 census, its population was 165, in 48 families.