Indo-European languages 46% (Europe, Western Asia, South Asia, North Asia, North America, South America, and Oceania) Sino-Tibetan languages 21% (East Asia, Mainland Southeast Asia, and South Asia) Niger–Congo languages 6.4% (Sub-Saharan Africa) Afro-Asiatic languages 6.0% (North Africa to Horn of Africa, and Western Asia) Austronesian languages 5.9% (Oceania, Madagascar, and Maritime Southeast Asia) Dravidian languages 3.7% (South Asia) Altaic languages (controversial combination of Turkic, Mongolic, and Tungusic families) 2.3% (Central Asia, North Asia (Siberia), and Anatolia)[lower-alpha 11] Austroasiatic languages 1.7% (Mainland Southeast Asia) Tai–Kadai languages 1.3% (Southeast Asia)