Joveyn County () is in Razavi Khorasan province, Iran. Its capital is the city of Neqab.
In 2007, Joveyn District was separated from Sabzevar County in the establishment of Joveyn County, which was divided into two districts of two rural districts each, with Neqab as its capital and only city at the time. The village of Hokmabad was converted to a city in 2018.
At the time of the 2011 National Census, the county's population was 54,139 people in 15,400 households. The 2016 census measured the population of the county as 54,488 in 16,738 households.
Joveyn County's population history and administrative structure over two consecutive censuses are shown in the following table.