Gyaman (or Gyaaman) also spelled Jamang (or Jaman), (1450-1895) was a medieval Akan people state, located in what is now the peninsula Ashantiland and Côte d'Ivoire. Gyaman was founded by the Abron, a branch of the Akan, in the late 15th century. The Abron then proceeded to conquer the Kulangos, Nafanas, Ligbis, and other ethnic groups of the area.
In the pre-colonial Gyaman government, a paramount chief known as the Gyamanhene ruled the kingdom from Amanvi, but his four provincial chiefs held the kingdom's real power. The kingdom's economy centered on the capital Sampa and the Dyula market town of Bonduku.