| SUM | Scalable Uncertainty Management 
| Others |
| SUM | Scaling Up of MARPs
| Others |
| SUM | Security Update Manager
| Others |
| SUM | Selective Understanding Markets
| Others |
| SUM | Self Updating Memory
| Others |
| SUM | Single Usability Metric
| Others |
| SUM | Single User Monitor
| Others |
| SUM | Skyrim Ultimate Mess
| Others |
| SUM | Smart Uplink Module
| Others |
| SUM | Soccer United Marketing
| Others |
| SUM | Social Unrest Monitoring
| Others |
| SUM | Software Update Manager
| Others |
| SUM | Software User Manual
| Others |
| SUM | Software User's Manual
| Others |
| SUM | SOHO User's Manual
| Others |
| SUM | Southern Utah Miatas
| Others |
| SUM | Stainless Ultra Match
| Others |
| SUM | Startup Manager
| Others |
| SUM | State University Medical
| Others |
| SUM | Straight Up Margin
| Others |
| SUM | Students Undertaking Missions
| Others |
| SUM | Summary of Unadjusted Misstatements
| Others |
| sum | Summation
| Others |
| Sum | Summation of
| Others |
| SUM | Summum
| Others |
| SUM | Supermicro Update Manager
| Others |
| SUM | Supplementary Uninsured Motorist
| Others |
| SUM | Support, Upskilling, and Multicultural
| Others |
| SUM | Surface-to-Underwater Missile
| Others |
| SUM | Suspension Module
| Others |
| SUM | Sustainable Underground Mining
| Others |
| SUM | Systems Unit Method
| Others |
| sum. | SUMMENDUS To Be Taken
| Others |