| BARS | Battlefield Augmented Reality System (Office of Naval Research) | 战场增强现实系统（海军研究办公室） |
| BARS | Biodiversity Action Recording System (UK) | 生物多样性行动记录系统（英国） |
| BARS | Behaviorally Anchored Rating Scale | 行为锚定评分量表 |
| BARS | Base Accounts Receivable System | 基地应收账目系统 |
| BARS | Boeing Action Request System | 波音行动请求系统 |
| BARS | Baseline Accounting and Reporting System | 基线会计和报告系统 |
| BARS | Business Area Requirements Specification | 业务领域需求规范 |
| BARS | Boston Activists For Revolutionary Schooling | 波士顿革命学校活动人士 |
| BARS | Barn Swallow (Hirundo rustica, bird species) | 谷仓燕子（Hiundo rustica，鸟类） |
| BARS | Barry Adrian Reese Story (music album) | 巴里·阿德里安·里斯故事（音乐专辑） |
| BARS | BNCOC Automated Reservation System | BNCOC自动预订系统 |
| BARS | Behavioral Assessment and Research System | 行为评估与研究系统 |
| BARS | Barnes Akathisia Rating Scale | Barnes Akathisia评分量表 |
| BARS | Behaviourally-Anchored Rating Scale | 习惯锚定评分量表 |
| BARS | Background Asia Risk Solutions | 背景亚洲风险解决方案 |
| BARS | Budgeting Accounting And Reporting Systems | 预算会计和报告系统 |
| BARS | Basic Alternate Route Selection | 基本备选路线选择 |