The Great Lakes Twa, also known as Batwa, Abatwa or Ge-Sera, are a Bantu speaking group native to the African Great Lakes region on the border of Central and East Africa. As an indigenous pygmy people, the Twa are generally assumed to be the oldest surviving population of the Great Lakes region. Current populations of Great Lakes Twa people live in the states of Rwanda, Burundi, Uganda and the eastern portion of the Democratic Republic of Congo. In 2000 they numbered approximately 80,000 people, making them a significant minority group in these countries. The largest population of Twa is located in Burundi estimated in 2008 at 78,071 people.

In anthropology, pygmy peoples are ethnic groups whose average height is unusually short. The term pygmyism is used to describe the phenotype of endemic short stature for populations in which adult men are on average less than 150 cm tall.