There are 12 cities in the United States named Gainesville, spread across nine states:
Note: Some states have more than one Gainesville (e.g., Texas has two).
The name also appears in:
Most U.S. Gainesvilles are named after General Edmund P. Gaines (1777–1849), a War of 1812 hero and later commander of the Western Military Department. The Florida city, the largest and best-known, was named in 1854 when it became the county seat of Alachua County.