| M.S.M. | Master of Sacred Music 
| Others |
| MSM | Maastricht school of Management
| Others |
| MSM | Magnetic Screw Machine
| Others |
| MSM | Magnetospheric Specification Model
| Others |
| MSM | Main Stream Media
| Others |
| MSM | MainStream Media
| Others |
| MSM | Manhattan School of Music
| Others |
| MSM | Manned Support Module
| Others |
| MSM | Marin Ship Management
| Others |
| MSM | Mario Sports Mix
| Others |
| MSM | Maruti Service Masters
| Others |
| MSM | Maruti Suzuki Motorsport
| Others |
| MSM | Master of Science in Management
| Others |
| MSM | Master Society Motors
| Others |
| MSM | Mastermind Ship Management
| Others |
| MSM | Mastermind Shipmanagement
| Others |
| MSM | Masters of Science in Management
| Others |
| MSM | Material Science & Metallurgy
| Others |
| MSM | Materials Science and Metallurgy
| Others |
| MSM | Matrix Switch Module
| Others |
| MSM | Mazdaspeed Miata
| Others |
| MSM | Media Session Manager
| Others |
| MSM | Media Streams Manager
| Others |
| MSM | Media Support Module
| Others |
| MSM | Memory Seat Module
| Others |
| MSM | Memory Stick Micro
| Others |
| MSM | men who have sex with men
| Others |
| MSM | men who have sex with men[
| Others |
| MSM | Meritorious Service Medal
| Others |
| MSM | Meritous Service Medal
| Others |
| MSM | Meta Script Master
| Others |
| MSM | Meta State Machine
| Others |
| MSM | Metal Semiconductor Metal
| Others |
| MSM | Metal Spinning Machine
| Others |
| MSM | Metal-Semiconductor-Metal
| Others |
| MSM | Method of Simulated Moments
| Others |
| MSM | Methyl Sulfonyl Methane
| Others |
| MSM | Miami Sound Machine
| Others |
| MSM | Michigan State Militia
| Others |
| MSM | Micro Station Manager
| Others |
| MSM | Micro Station Modeler
| Others |
| MSM | Microsoft Magnifier
| Others |
| MSM | Microsoft Media
| Others |
| MSM | Microsoft Merge Modules
| Others |
| MSM | Microsoft Sculpt Mobile
| Others |
| MSM | Middle School Madness
| Others |
| MSM | Midnight Silver Metallic
| Others |
| MSM | Midnight Sun Marathon
| Others |
| MSM | Mike Straw Media
| Others |
| MSM | Military Service Members
| Others |
| MSM | Million Square Metres
| Others |
| MSM | MineSweeper, LCM conversion
| Others |
| MSM | Mirror Signal Manoeuvre
| Others |
| MSM | Missoula Sheet Metal
| Others |
| MSM | Missouri School of Mines
| Others |
| MSM | Missouri State Militia
| Others |
| MSM | Mobile Staff Management
| Others |
| MSM | Mobile Station Modem
| Others |
| MSM | Modern Steel Metallic
| Others |
| MSM | Motor Sport Magazine
| Others |
| MSM | Motor Sport Manager
| Others |
| MSM | Mount St. Mary's
| Others |
| MSM | Mouvement Socialiste Militant
| Others |
| MSM | Msm Supplement Msm
| Others |
| MSM | Multi Segment Model
| Others |
| MSM | Multi Shelf Management
| Others |
| MSM | Multi Site Manager
| Others |
| MSM | Multi-layer Switch Module
| Others |
| MSM | Multi-Session Monitor
| Others |
| MSM | Multilayer Switch Module
| Others |
| MSM | Multiservices Storage Manager
| Others |
| MSM | Murder, Suicide, and Mahem
| Others |
| MSM | Muscle Stangs of Miami
| Others |