Tai peoples are the populations who speak (or formerly spoke) the Tai languages. There are a total of about 93 million people of Tai ancestry worldwide, with the largest ethnic groups being Dai, Thais, Isan, Tai Yai, Lao, Tai Ahom, and Northern Thai peoples. The Tai are scattered through much of South China and Mainland Southeast Asia, with some (e.g. Tai Ahom, Tai Khamti, Tai Phake, Tai Aiton) inhabiting parts of Northeast India. Tai peoples are both culturally and genetically very similar and therefore primarily identified through their language.