| CHAS | CHannel Associated Signaling | 随路信令 |
| CHAS | Children's Hospice Association of Scotland | 儿童的临终关怀协会的苏格兰 |
| CHAS | Charles | 查尔斯 |
| CHAS | Comprehensive Housing Affordability Strategy | 综合住房负担能力战略 |
| CHAS | Chicago High School for Agricultural Sciences | 芝加哥农业科学高中 |
| CHAS | Division of Chemical Health and Safety (American Chemical Society; also seen as DCHAS) | 化学健康与安全部（美国化学学会；也称为DCHAS） |
| CHAS | Corporate Headquarters Administrative Services (State Farm Insurance) | 公司总部行政服务（国家农场保险） |
| CHAS | Chemical Hazard Assessment System | 化学危害评估系统 |
| CHAS | Charleston | 查尔斯顿 |
| CHAS | Contractors Health and Safety Assessment Scheme (UK) | 承包商健康和安全评估计划（英国） |
| CHAS | Center for Health Administration Studies | 卫生行政研究中心 |
| CHAS | Chastain Capital Corporation | 查斯坦资本公司 |