| Acronym | Definition |
|---|
| MSR | Microsoft Research |
| MSR | Montserrat (ISO Country code) |
| MSR | Magnetic Stripe Reader |
| MSR | Mountain Safety Research (outdoor goods manufacturer) |
| MSR | Egyptair (ICAO code) |
| MSR | Model-Specific Register |
| MSR | Mining Software Repositories (IEEE conference) |
| MSR | Main Supply Route |
| MSR | Metropolis Street Racer (video game) |
| MSR | Medium Screen Rendering (Opera browser) |
| MSR | Molten Salt Reactor |
| MSR | Molecular Sequence Reduction (Peribit Networks, Inc.) |
| MSR | Market Street Railway (transit agency in San Francisco from the 1920s to 1940's; now a nonprofit organization dedicated to the preservation of historic transit) |
| MSR | Member Service Representative |
| MSR | March, Strathspey & Reel (bagpipe music competition) |
| MSR | Machine State Register |
| MSR | Modélisation des Systèmes Réactifs |
| MSR | Monthly Status Report |
| MSR | Microwave Scanning Radiometer |
| MSR | Missile Site Radar |
| MSR | Machine Stress Rating |
| MSR | Malicious Software Removal (Microsoft) |
| MSR | Motor Starter |
| MSR | Mulder/Scully Relationship (X-Files) |
| MSR | Malaysian Society of Rheumatology |
| MSR | Moisture Separator Reheater |
| MSR | Manufacturer Supplier Relationship |
| MSR | Major Supply Route |
| MSR | Motor Sport Ranch |
| MSR | Mobile Support Router |
| MSR | Mobile Sea Range |
| MSR | Monthly Status Review |
| MSR | Missile Simulation Round (Army) |
| MSR | Mission Support Room (NASA) |
| MSR | Master Ship Repair |
| MSR | Minesweeper, Patrol |
| MSR | Multiservice Switch Router (Cisco) |
| MSR | Mississippi Southern Railroad |
| MSR | Multi-Sensory Room (communication) |
| MSR | Material Status Report |
| MSR | Management Systems Review |
| MSR | Medical Sales Representative |
| MSR | Management Status Report (Flight Projects Directorate) |
| MSR | Malcom Smith Racing |
| MSR | mission support request (US DoD) |
| MSR | Multiple Service Ring |
| MSR | Mortgage Service Rights (mortgage banking industry) |
| MSR | Milestone Review |
| MSR | Minimum Sustaining Rate |
| MSR | Modified Signed Rank |
| MSR | Message Storage and Retrieval |
| MSR | Medical Software Reviews (newsletter) |
| MSR | Muscle Stretch Reflex |
| MSR | Machine Stress-Related (lumber) |
| MSR | Major Structural Repair (aircraft damage repair) |
| MSR | Torque Moment Regulation (Skoda, UK) |
| MSR | Minimum Security Requirement |
| MSR | Multimedia Satellite Receiver |
| MSR | Merge-Split Reconfiguration |
| MSR | Motor Spin Regulator (Maserati) |
| MSR | Material Ship/Shipping Reporting |
| MSR | Multiplicity Shift Register |
| MSR | Milwaukee Special Reserve (beer) |
| MSR | Machine Service Report |
| MSR | Media Selection Report |
| MSR | Member of the Society of Radiographers (UK) |
| MSR | McDonnell Simulator Rocket |
| MSR | Main Steam Reheater |
| MSR | Market Service Requirement |
| MSR | Military Standardization Requirement |
| MSR | Mammalian Selectivity Ratio |
| MSR | Maritime Security Regime |
| MSR | Mid Stage Right (theater) |
| MSR | Main Shift Register |
| MSR | Main Switch Room |
| MSR | Military Service Requirement |
| MSR | Meteorological Survey Radar |
| MSR | Mean Sub-Sequence-Reduced (voting algorithm) |
| MSR | Military Staffing Requirements |
| MSR | Multispeed Repeater |
| MSR | MSCS Status Review |
| MSR | Mandatory Special Requirement |
| MSR | Mindstate Records (Detroit, MI recording studio) |
| MSR | Multiple Service Rule (Medicare Australia) |