BAS

BAS may stand for:


 * Bachelor of Applied Science (BAS or BASc)
 * Bachelor of Arts and Science (BAS or BASc)
 * Bank of America Securities
 * Basaa language, ISO 639-2 and -3 language code bas
 * Basic Allowance for Subsistence in United States Military Pay
 * Battalion Aid Station, US military
 * Bay St. Louis station, station code BAS
 * Befreiungsausschuss Südtirol (South Tyrolean Liberation Committee)
 * Behavioural Activation System in Gray's biopsychological theory of personality
 * Belt alternator starter, or BAS hybrid
 * Bere Alston railway station, National Rail station code BAS
 * Bergen Arkitekt Skole (Bergen School of Architecture)
 * Biblical Archaeology Society, publisher of the BAS Library series
 * Book of Alternative Services of the Anglican Church of Canada
 * Brake assist system in an automobile
 * British Antarctic Survey
 * British Art Show
 * Broadcast auxiliary service
 * Brussels American School
 * Building automation system
 * Bulgarian Academy of Sciences
 * Business Activity Statement, an Australian Taxation Office form