| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| BAS | Breathing Air System | In English | |
| BAS | British Antartic Survey | In English | → Threats to the environment → Earth sciences → United Kingdom  | 
| BAS | Bureau d'Aide Sociale | In French | → Social welfare | 
| BAS | Biddinghuizener Algemene Sportvereniging | In Dutch | → Organizations and associations → Sport, physical exercises  | 
| BAS | Basic Allowance For Subsistence | In English | → Military affairs | 
| BAS | Bâtiment des Auxiliaires de Sauvegarde | In French | |
| BAS | Broadband Access Server | In English | → Telecommunications |