White Oak is an unincorporated community in Dunklin County, Missouri, United States. It is located on Route 25, approximately five miles north of Kennett.
As of the 2020 census, White Oak had a population of 101.
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.
It is in the Holcomb R-III School District.