BIAT may refer to:
Biat language, a variation of Mnong Banque Internationale Arabe de Tunisie Boston Institute for Arts Therapy; see A Bing Bang Holidang British Institute of Architectural Technologists, an earlier name for the Chartered Institute of Architectural Technologists
See also , the Gascon name for Saint-Béat, Haut-Garonne, France Biate (town), a town in India