The Adouma (or Duma) are an ethnic group of Gabon, in western Africa. They primarily live on the south bank of the upper Ogowe River, in the vicinity of Lastoursville (originally an Adouma village), and are known as expert canoeists.
Their traditions hold that they arrived from the east or southeast, coming down the Sebe River to the Ogowe, and thence to the Doumé rapids. They made canoes of okoumé, and sold slaves to the Okandé, receiving European products such as guns and cloth in exchange. The SHO established a post at Lastoursville and engaged the Adouma in trade for rubber, ivory, and ebony.
During the 1970s and 80s, many Adouma moved down the Ogowe, towards Port-Gentil.