The ngoni (also written ngɔni, n'goni, or nkoni) is a traditional West African string instrument. Its body is made of wood or calabash with dried animal (often goat) skin head stretched over it. The ngoni, which can produce fast melodies, appears to be closely related to the akonting and the xalam. This is called a jeli ngoni as it is played by griots at celebrations and special occasions in traditional songs called fasas in Mandingo. Another larger type, believed to have originated among the donso (a hunter and storyteller caste of the Wassoulou cultural region) is called the donso ngoni. This is still largely reserved for ceremonial purposes. The donso ngoni, or "hunter's harp," has six strings. It is often accompanies singing along with the karagnan, a serrated metal tube scraped with a metal stick. The donso ngoni was mentioned by Richard Jobson in the 1620s, describing it as the most commonly used instrument in the Gambia. He described it as an instrument with a great gourd for a belly at the bottom of a long neck with six strings.
The ngoni is known to have existed since at least 1352, when Ibn Battuta, a Moroccan traveller reported seeing one in the court of Mansa Musa. It is believed to have evolved into the banjo in North America after enslaved Mandé were brought there. Battuta also reported the balafon. A book written by English musician Ramon Goose about the ngoni describes its known history, tunings and a beginner's guide to playing the instrument.