贾布县（Juab County, Utah）是美国犹他州中西部的一个县，西邻内华达州。面积8,822平方公里。根据美国2000年人口普查，共有人口8,238人，2005年人口9,113人。县治和最大城市为尼腓（Nephi）。

成立于1852年。县名是印第安语，是「干燥的谷地」或者「谷地」的意思。

Juab County /ˈdʒuːæb/ is a county located in the U.S. state of Utah. As of the 2010 census, the population was 10,246. Its county seat and largest city is Nephi. The county was named from a Native American word meaning thirsty valley, or possibly only valley.