| RUM | Radial Ulnar and Median 
| Others |
| RUM | Radial, Ulnar, and Median
| Others |
| RUM | Ramba Urvashi Menaka
| Others |
| RUM | Random Uncle Musings
| Others |
| RUM | Rapid UNIX Microsoft
| Others |
| RUM | Rats Under Me
| Others |
| RUM | Real Urban Music
| Others |
| RUM | Real User Measurement
| Others |
| RUM | Real User Metrics
| Others |
| RUM | Real User Monitoring
| Others |
| RUM | Received Urgent Message
| Others |
| RUM | Recursive Update Model
| Others |
| RUM | Reference Unique de Mandat
| Others |
| RUM | Reformed University Ministries
| Others |
| RUM | Register of Unusual Microcars
| Others |
| RUM | Regular Use Medicine
| Others |
| RUM | Relay User Machine
| Others |
| RUM | Reliable Unicast Messaging
| Others |
| RUM | Remington Ultra Magnum
| Others |
| RUM | Remote Underwater Manipulator
| Others |
| RUM | Remote Update Manager
| Others |
| RUM | Remote User Multiplex
| Others |
| RUM | Residential Utility Management
| Others |
| RUM | Resource and Unit Monitoring
| Others |
| RUM | Restricted User Mode
| Others |
| RUM | Return of Unwanted Medicines
| Others |
| RUM | Return Unused Medicines
| Others |
| RUM | Return Unwanted Medicines
| Others |
| RUM | Richmond Ultimate Mixed
| Others |
| RUM | Road Use Management
| Others |
| RUM | Roll Up Mode
| Others |
| RUM | Rumence
| Others |
| RUM | Rumjartar, Nepal
| Others |