达令敦县（Darlington County, South Carolina）是美国南卡罗莱纳州东北部的一个县。面积1,468平方公里。根据美国2000年人口普查，共有人口67,394人。县治达令敦 (Darlington)。

成立于1785年。县名可能来自英国的达令敦。

Darlington County is a county located in the U.S. state of South Carolina. As of the 2010 census, its population was at 68,681. Its county seat is Darlington.

Darlington County is included in the Florence, SC Metropolitan Statistical Area. The county's population was nearly 60% rural in 2000.