White Oak is an unincorporated community in Dunklin County, Missouri, United States. It is located on Route 25 about five miles north of Kennett.
A post office called White Oak was established in 1891, and the name was changed to Whiteoak in 1895. The community was named for a grove of white oak trees near the original town site.
Coordinates: 36°19′49″N 90°01′40″W / 36.33028°N 90.02778°W