| SUM | Surface-to-Underwater Missile | 舰[地面]对水下导弹 |
| SUM | System Utilization Monitor | （计算）系统利用情况监控器 |
| SUM | SOHO User's Manual | 苏荷区用户的使用手册 |
| SUM | Software User Manual | 软件用户手册 |
| SUM | Systems Unit Method | 系统单元方法 |
| SUM | Selective Understanding Markets | 选择性了解市场 |
| SUM | Support Upskilling And Multicultural | 支持提升技能和多元文化 |
| SUM | Students Undertaking Missions | 执行任务的学生 |
| SUM | Self Updating Memory | 自更新内存 |
| SUM | Straight Up Margin | 直上边距 |
| SUM | Stupid User Mistake | 愚蠢的用户错误 |
| SUM | Small Submarine Underwater Module | 小型潜艇水下模块 |
| SUM | Software User's Manual | 软件用户手册 |
| SUM | Single User Monitor | 单用户监视器 |
| SUM | Summary | 总结 |
| SUM | Spacecraft User Manual | 航天器用户手册 |
| SUM | Simplified Unified Messaging | 简化的统一消息 |
| SUM | Sumas, Washington (border patrol station) | 华盛顿州苏马斯（边境巡逻站） |
| SUM | Sumerian (non-Indo-European; linguistics) | 苏美尔语（非印欧语系；语言学） |
| SUM | Single Event Upset Monitor | 单事件异常监视器 |
| SUM | System User's Manual | 系统的用户手册 |
| SUM | Standard USAREUR Munitions | USAREUR标准弹药 |
| SUM | Scalable Uncertainty Management | 可扩展的不确定性管理 |
| SUM | System Utility Module | 系统实用程序模块 |
| SUM | Senter for utvikling og miljø (Centre for Development and the Environment; Norway) | Senter for utvikling og miljø (Centre for Development and the Environment; Norway) |
| SUM | Science Utilization Management | 科学利用管理 |
| SUM | Sony U-Matic Videotape | 索尼U-Matic录像带 |