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.

The Baka people, known in the Congo as Bayaka, are an ethnic group inhabiting the southeastern rain forests of Cameroon, northern Republic of the Congo, northern Gabon, and southwestern Central African Republic. They are sometimes called a subgroup of the Twa, but the two peoples are not closely related. Likewise, the name "Baka" is sometimes mistakenly applied to other peoples of the area who, like the Baka and Twa, have been historically called pygmies, a term that is now considered derogatory.