| BASE | Bio-Applications and Systems Engineering | 生物应用和系统工程 |
| BASE | Bank America Systems Engineering | 美国银行系统工程 |
| BASE | Bank-Americard Service Exchange | 美国银行服务交易所 |
| BASE | Bank- Americard Service Exchange | 银行-美国卡服务交易所 |
| BASE | Bible Archaeology, Search & Exploration Institute (Palmer Lake, CO) | 圣经考古学、搜索和探险协会(帕湖,CO) |
| BASE | Building, Antennae, Span, Earth (parachute jumping) | 建筑物、天线、跨度、地球（跳伞） |
| BASE | Bathymetry Associated with Statistical Error | 与统计误差相关的测深 |
| BASE | Bay Area Security Enhancement (San Francisco CALTRANS) | 湾区安全增强（旧金山CALTRANS） |
| BASE | Berlin Aging Study | 柏林老龄化研究 |
| BASE | Babes, Automobiles, Sports, Entertainment (website) | 宝贝，汽车，体育，娱乐（网站） |
| BASE | Brigade Automated Simulation Exercise | 旅自动化模拟演习 |
| BASE | Basic Army Strategic Estimates | 陆军战略基本估计 |
| BASE | Basic Analysis and Security Engine (software) | 基本分析和安全引擎（软件） |
| BASE | Bay Area Studio Engineering | 湾区工作室工程 |
| BASE | Blind Adaptive Signal Extraction | 盲自适应信号提取 |
| BASE | Bipolar Advanced Silicon for Europe | 欧洲双极先进硅 |
| BASE | Believe, Achieve, Support, and Educate | 相信、实现、支持和教育 |
| BASE | Beta-Alumina Solid Electrolyte | β-氧化铝固体电解质 |
| BASE | Building, Antenna, Span, and Earth | 建筑物、天线、跨度和接地 |
| BASE | Buildings, Antennas, Spans, and Earth | 建筑物、天线、跨度和地球 |
| BASE | Building Antenna Spans Earth | 建筑天线跨接地 |
| BASE | Bedini Audio Special Environment | Bedini音频特殊环境 |
| BASE | Bangalore Academy of Science and Education | 班加罗尔科学教育学院 |
| BASE | Boston Area Semiconductor Education (Council) | 波士顿地区半导体教育（理事会） |
| BASE | Business Attraction Support Establishment | 商业吸引支持建立 |