MSO

• Academic Administration
• Madison Symphony Orchestra
• Management Services Organization
• Manufacturer Statement of Origin
• Maritime Security Operations
• Mars Science Orbiter
• Martha Stewart Living Omnimedia
• McLaren Automotive
• Melbourne Symphony Orchestra
• Methionine sulfoximine
• Michigan Southern Railroad (1989)
• Microsoft Outlook
• Milwaukee Symphony Orchestra
• Mind Sports Olympiad
• Mind Sports Organization
• Minesweeper (ship)
• Missoula International Airport
• Mixed Service Organisation
• Monadic second-order
• Montreal Symphony Orchestra
• Moston railway station
• Mountain Skies Observatory
• Multiple system operator
• Murashige and Skoog medium
• Muslim Students Organisation of India
• Oscilloscope