Bais, chartered city and port, southeastern Negros island, Philippines. Fronting the Tanon Strait on the east, the port accommodates oceangoing vessels and is the shipping centre for sugar refined in Bais. The Sacred Heart Academy, a Roman Catholic liberal arts college, was founded in 1947. A pulp and paper mill is the other principal industry in Bais. Inc. city, 1968. Pop. (2000) 68,115; (2010) 74,722.