Grand'Anse (/ɡrɒ̃ˈtɒ̃s/, French: [ɡʁɑ̃tɑ̃s]), Grandans or Grantans (Haitian Creole: [ɡɣãtãs]; both meaning "Big Cove") is one of the ten departments of Haiti.

Grand'Anse was part of the Xaragua kasika with settlements including Mamey, the modern-day town of Abricot.

It is said by the locals that the capital city of Jérémie is named after a French fisherman who established himself in the area because of its isolation from the rest of the country.

Due to its rather mountainous geography, Grand'Anse did not support many plantations, and was therefore populated largely by white and mixed-race communities with some of the best schools in the colony.

The battle was one of the most important scenes of the Haitian Revolution, with Laurent Férou [fr], an officer, becoming known as the "Liberator of the Grand'Anse."

Grand'Anse de facto sided with the monarchy under the leadership of Jean-Baptiste Perrier (under the alias Goman) who established a government in the Macaya mountain chain known as the Kongo Kingdom.

For 20 years the Kongo Kingdom based in Grand-Doco was financed by the self-declared king of the northern monarchy Henri Christophe; Goman was titled duke.

Navassa is currently the subject of a territorial dispute between Haiti and the United States, which administers it through the US Fish and Wildlife Service.