Lincoln County is located between the Arkansas Timberlands and Arkansas Delta in the U.S. state of Arkansas. It is also within the Pine Bluff metro area, and on the outer edge of the Central Arkansas region. The county is named for President Abraham Lincoln. Created as Arkansas's 65th county on March 28, 1871, Lincoln County has three incorporated cities, including Star City, the county seat and most populous city. The county contains 46 unincorporated communities and ghost towns, Cane Creek State Park at the confluence of Cane Creek and Bayou Bartholomew, and nine listings on the National Register of Historic Places to preserve the history and culture of the county.

The Arkansas Delta is one of the six natural regions of the state of Arkansas. Willard B. Gatewood Jr., author of The Arkansas Delta: Land of Paradox, says that rich cotton lands of the Arkansas Delta make that area "The Deepest of the Deep South."