Sullivan Gardens is an census-designated place in southwestern Sullivan County, Tennessee, located southwest of Kingsport.
Sullivan Elementary School and Sullivan Middle School are located in the "downtown" area.
Tennessee State Route 93 (Sullivan Gardens Parkway) used to run north and south through the community. Now most visitors continue on the Sullivan Gardens Parkway as a bypass as there is no major business located on Sullivan Gardens Drive. Tennessee State Route 347 (Lone Star Road) runs east and west.