MSW

• Manatawny Still Works, a craft distillery in Pottstown, Pennsylvania, United States
• Massawa International Airport, Eritrea (by IATA code)
• Ministry of Interior (Poland) ({{langx|pl|Ministerstwo Spraw Wewnętrznych|links=no}})
• Muslim Society of Washington, a religious organization based in the United States

• Metres sea water, a unit of pressure
• Mikheyev–Smirnov–Wolfenstein effect, in particle physics
• MSWLogo, an interpreted computer programming language
• Machine Status Word, a data segment in the Intel 286 LOADALL instruction set
• Microsoft Windows, an operating system

• Mao Shan Wang, a popular cultivar of durian
• Master of Social Work, a postgraduate qualification and academic title
• Municipal solid waste

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