| UCAS | Universities and Colleges Admission Service | 高等院校招生办公室 |
| UCAS | Unified Canadian Aboriginal Syllabics | 统一加拿大土著语音节 |
| UCAS | United Canadian American States (gaming, Shadowrun) | 美国-加拿大（游戏、Shadowrun） |
| UCAS | Ufficio Complicazioni Affari Semplici | Ufficio Complicazioni Affari Semplici公司 |
| UCAS | Universal Conditional Access System | 通用条件访问系统 |
| UCAS | Universities and Colleges Admissions Service (UK) | 大学和学院招生服务（英国） |
| UCAS | USAREUR Community Automation System | USAREUR社区自动化系统 |
| UCAS | Unit Cost Analysis System | 单位成本分析系统 |
| UCAS | Unmanned Combat Air System | 无人作战空中系统 |
| UCAS | University And Colleges Admissions Service | 大学和学院招生服务 |
| UCAS | University Colleges And Art Schools | 大学学院和艺术学校 |
| UCAS | Utah County Academy of Sciences (Orem, UT) | 犹他州县科学院（俄勒姆，UT） |
| UCAS | University And College Application Service | 大学和学院申请服务 |
| UCAS | University And College Admissions Service | 大学和学院招生服务 |
| UCAS | University And Colleges Admission Services | 大学和学院招生服务 |
| UCAS | University And Colleges Application Service | 大学和学院申请服务 |