Fr. Haiti, officially Republic of Haiti, republic (2005 est. pop. 8,122,000), 10,700 sq mi (27,713 sq km), West Indies, on the western third of the island of Hispaniola. It is bounded on the north by the Atlantic Ocean, on the south by the Caribbean Sea, and on the east by the Dominican Republic. Jamaica lies to the west and Cuba to the northwest. The offshore islands of Tortuga and Gonâve also belong to Haiti. The capital and largest city is Port-au-Prince.