Tunica is a town in Tunica County, Mississippi, United States, located near the Mississippi River. Until the early 1990s the town was one of the most impoverished places in the United States, semi-famous for the particularly deprived neighbourhood known as "Sugar Ditch Alley", named for the open sewer located there. The town now lies on the fringe of a growing gambling resort area, with major casinos attracting visitors from nearby Memphis, Tennessee, West Memphis, Arkansas and all over the Southeast.
The town is the fourth community to serve as county seat of Tunica County, succeeding earlier county seats at Commerce (1839–1842, 1842–1847), Peyton (1842, temporary) and Austin (1847–1888).
Tunica is located at 34°41′20″N 90°22′50″W / 34.68889°N 90.38056°W / 34.68889; -90.38056 (34.688797, -90.380587).