| UCD | user-centered design | 用户中心设计 |
| UCD | Usable Completion Date | 可用完成日期 |
| UCD | Union Canadienne DÉmocratique (French) | Union Canadienne DÉmocratique (French) |
| UCD | University of Colorado at Denver (Denver, CO) | 科罗拉多大学丹佛分校（科罗拉多州丹佛） |
| UCD | Universal Cable Descrambler | 通用电缆解扰器 |
| UCD | UniÓn de Centro DemocrÁtico | UniÓn de Centro DemocrÁtico |
| UCD | University College, Dublin (Faculty of Veterinary Medicine) | 都柏林大学学院（兽医学院） |
| UCD | Under Construction Daily | 每日施工中 |
| UCD | Use Case Diagram ( Prosa/OM) | 使用案例图表(Prosa / OM) |
| UCD | Unstructured Cell Data | 非结构化单元格数据 |
| UCD | University of Colorado Denver | 科罗拉多大学丹佛分校 |
| UCD | usual childhood diseases | 常见儿童疾病 |
| UCD | Universal Controller Device (MILES Component) | 通用控制器设备（MILES组件） |
| UCD | Upstream Channel Descriptor | 上游信道描述符 |
| UCD | urine collection device | 尿液收集装置 |
| UCD | University College Dublin | 都柏林大学学院 |
| UCD | Unresolvable Conflict Detection | 无法解决的冲突检测 |
| UCD | University of California at Davis | 加州大学戴维斯分校 |
| UCD | Umatilla Chemical Depot (Hermiston, Oregon) | Umatilla化学仓库（俄勒冈州埃尔姆斯顿） |
| UCD | Uniform Call Distribution | 统一呼叫分配 |
| UCD | Underwood Conservation District | 安德伍德保护区 |
| UCD | Unicode Character Database | Unicode字符数据库 |
| UCD | Unemployment Compensation Disbursement | 失业补偿发放 |
| UCD | United Companion Dog (UKC obedience title) | 联合伴侣犬（UKC服从称号） |
| UCD | Union of Cambodian Democrats | 柬埔寨民主联盟 |
| UCD | Uncounted Departures (immigration) | 未计算离境（移民） |
| UCD | UniÓn de Centro DemocrÁtico (Spanish Political Party) | UniÓn de Centro DemocrÁtico (Spanish Political Party) |
| UCD | Universal Call Distribution | 通用呼叫分配 |
| UCD | Uncontested Dissolution of Marriage (legal) | 无条件解除婚姻（合法） |