Zarach (Persian: زارچ)[a] is a city in the Central District[b] of Zarach County, Yazd province, Iran, serving as capital of both the county[4] and the district.

Zarach has the longest and oldest kariz in the world, with a length of 71 km and is over 3,000 years of age.

[6] At the time of the 2006 National Census, the city's population was 9,979 in 2,447 households, when it was in Zarach District[c] of Yazd County.

[8] The 2016 census measured the population of the city as 11,691 people in 3,388 households.

This Yazd province location article is a stub.