Zephaniah Kingsley Jr. (December 4, 1765 – September 14, 1843) was a Quaker, born in England, who moved as a child with his family to South Carolina, and became a planter, slave trader, and merchant. He built several plantations in the Spanish colony of Florida near what is now Jacksonville, Florida. He served on the Florida Territorial Council after Florida was acquired by the United States in 1821. Kingsley Plantation, which he owned and where he lived for 25 years, has been preserved as part of the Timucuan Ecological and Historic Preserve, run by the United States National Park Service. He then moved with his large family to a vanished plantation, Mayorasgo de Koka, in what was then Haiti but soon became part of the Dominican Republic.