Yazd County () is in Yazd province, Iran. Its capital is the city of Yazd.
In 2023, Akramabad District was formed in the county and divided into Akramabad and Dehnow Rural Districts. Zarach District was separated from the county in the establishment of Zarach County and renamed the Central District.
At the time of the 2006 National Census, the county's population was 515,044 in 138,108 households. The following census in 2011 counted 582,682 people in 168,458 households. The 2016 census measured the population of the county as 656,474 in 195,134 households.
Yazd County's population history and administrative structure over three consecutive censuses are shown in the following table.