夏普县（Sharp County）是位于美国阿肯色州北部的一个县，面积1,768平方公里，县治阿什弗拉特。根据2000年美国人口普查，共有人口17,119。

夏普县成立于1833年11月16日，县名源自州立法委员伊弗雷姆·夏普。

Sharp County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 17,264. The county seat is Ash Flat. The county was formed on July 18, 1868, and named for Ephraim Sharp, a state legislator from the area.

Sharp County was featured on the PBS program Independent Lens for its 1906 "banishment" of all of its Black residents. A local newspaper at the time was quoted as saying that "The community is better off without them."