| Acronym | Definition |
|---|
| MSO➣Manufacturers Statement of Origin |
| MSO➣Microsoft Office |
| MSO➣Microsoft Outlook |
| MSO➣Multi System Operators |
| MSO➣Mixed Signal Oscilloscope |
| MSO➣Melbourne Symphony Orchestra |
| MSO➣Milwaukee Symphony Orchestra (Milwaukee, WI) |
| MSO➣Multiple System Operator |
| MSO➣Medial Superior Olive |
| MSO➣Mobile Switching Office |
| MSO➣Multiple Service Operator |
| MSO➣Mississippi Symphony Orchestra (Jackson, MS) |
| MSO➣Mind Sports Olympiad |
| MSO➣Monadic Second-Order Logic |
| MSO➣L-Methionine Sulfoximine (amino acid) |
| MSO➣Multicultural Student Organization |
| MSO➣Military Service Obligation |
| MSO➣Montreal Symphony Orchestra |
| MSO➣Martha Stewart Omnimedia |
| MSO➣Mexican Spotted Owl |
| MSO➣Multisystem Operator (as in satellite/cable TV networks) |
| MSO➣Medical Service Organization |
| MSO➣Methylated Seed Oil |
| MSO➣Military Support Officer |
| MSO➣Mustard Seed Oil |
| MSO➣Management Systems Office (various locations) |
| MSO➣Most Serious Offense (criminal justice) |
| MSO➣Management Services Officer |
| MSO➣Member Service Organization (various organizations) |
| MSO➣Malankara Syrian Orthodox (various locations) |
| MSO➣multiple system operations |
| MSO➣Minesweeper, Ocean (Non-Magnetic) |
| MSO➣Multiple Spurious Operations (US NRC) |
| MSO➣Mental State Assessment (various organizations) |
| MSO➣Mees Solar Observatory (Maui, Hawaii) |
| MSO➣Mind Sports Organisation (est. 1997; Canada) |
| MSO➣Molten Salt Oxidation |
| MSO➣Multi-Store Order |
| MSO➣Map Support Office (US DoD) |
| MSO➣Military Source Operation |
| MSO➣Multi-Service Operational |
| MSO➣Muslims Speak Out |
| MSO➣Marine Safety Office(r) (US DoD) |
| MSO➣Mixed Signal Option (Teradyne testers) |
| MSO➣Mobilization Staff Officer (US DoD) |
| MSO➣Migrant Student Organization (various organizations) |
| MSO➣Mission Safety Officer |
| MSO➣Moving Swiftly On |
| MSO➣Marine Survey Office |
| MSO➣Must Start On (project management) |
| MSO➣Mutual Service Office (insurance) |
| MSO➣Military Satellite Communications (MILSATCOM) Systems Organization (US DoD) |
| MSO➣Missoula, MT, USA - Missoula International (Airport Code) |
| MSO➣Maplewood/South Orange (New Jersey) |
| MSO➣Master Security Officer |
| MSO➣Major Service Outage |
| MSO➣Medical Second Opinion |
| MSO➣Midland Symphony Orchestra (Midland, Michigan) |
| MSO➣Mid-Atlantic Symphony Orchestra (Ocean City, MD) |
| MSO➣My Sweet One (Phish song) |
| MSO➣Mariposa Symphony Orchestra (Mariposa, CA) |
| MSO➣Molecular Spin Orbital |
| MSO➣Methionine Sulfone (code for modified amino acid) |
| MSO➣Medical Stores Organisation |
| MSO➣Mckeesport Symphony Orchestra (McKeesport, PA) |
| MSO➣Morale Support Officer |
| MSO➣Mobile Switch Office |
| MSO➣Mission Support Officer |
| MSO➣Manager of Search Operations |
| MSO➣Multimedia Service Operator |
| MSO➣Managed Services Organisation |
| MSO➣Mail Stream Optimization |
| MSO➣Middlesex Sheriff's Office (Medford, MA) |
| MSO➣Manufacturing Shop Order |
| MSO➣Multiple Subscriber Organization |
| MSO➣Main Street Office |
| MSO➣MILSATCOM Systems Office |
| MSO➣Murray Symphony Orchestra (Murray, UT) |
| MSO➣Marketing & Sales Office |
| MSO➣macro saccadic oscillation |
| MSO➣Maintenance Stores Office |
| MSO➣Maintenance Support Office |
| MSO➣Montessori School of Ojai (Ojai, CA) |
| MSO➣Minor Service Order |
| MSO➣Marketplace Services Organization (Canada) |
| MSO➣Materiel Status Officer |
| MSO➣Maintenance Spare Optimization |
| MSO➣MSE Systems Overhaul |
| MSO➣Most/Main/More Significant Other (Polyamory) |
| MSO➣Medical Support Order (health care) |
| MSO➣Military Supply Officer |
| MSO➣Military Satellite Officer |
| MSO➣Mission Space Objects |
| MSO➣Mission Staging Operation(s) |
| MSO➣Methadone Support Organization |
| MSO➣Major Sales Opportunities |
| MSO➣My Simple Office (Simple Office Solutions, Inc software) |
| MSO➣Machine Superior to Operator |
| MSO➣Maritme Security Operations (US) |
| MSO➣Major Sponsoring Organization |