4,500,000 (2006 Mahidol University).
Surat Thani, Chumphon, Nakhon Si Thammarat, Songkhla, Phatthalung, Ranong, Phangnga, Phuket, Krabi, Trang, Prachuap Khiri Khan, Pattani, Yala, and Satun provinces; Muslim Thai dialect.
5 (Developing). De facto language of provincial identity in southeasternmost 15 provinces.
Tak Bai (Tai Tak Bai), Thai Malay (Tai Islam). A group of dialects more distantly related to other Tai languages. Border dialects are quite distinct from others.
Thai script [Thai].
Buddhist, Christian, Muslim.