MSA (消歧義)

MSA可能指：

組織或企業

• 馬來西亞-新加坡航空：新加坡航空及馬來西亞航空的前身。
• 交通運輸部海事局（China Maritime Safety Administration）
• 海上保安廳（舊稱Maritime Safety Agency，今稱Japan Coast Guard）
• Maritime Security Agency, aka the Pakistan Coast Guard
• Masonic Service Association, a Freemasonry publishing resource
• Microscopy Society of America, a society for the promotion of microscopy
• Mine Safety Appliances, a manufacturer of industrial safety clothing and equipment
• Mineralogical Society of America, an organization for the advancement of mineralogy
• Motion Sensing Alliance, an alliance for the development of motion sensing technology
• Motor Sports Association, the governing body for motorsport in the United Kingdom
• Mutual Security Agency, established by the US Mutual Security Act (1951), and distributed aid to Europe after the Marshall Plan
• Mycological Society of America, a society promoting the study of fungi

教育

學位

• Master of Accountancy, an accounting degree
• Master of Science in Administration, a degree providing preparation for administrative positions

學校

• Mackintosh School of Architecture, an architecture school in Glasgow, Scotland
• Manchester School of Architecture, an architecture school in Manchester, England
• Maryland School of the Arts, a fictional dance school in the film Step Up
• Middle States Association of Colleges and Schools, an evaluation and accreditation association
• Minnesota Math and Science Academy, a school in Minnesota
• Mississippi School of the Arts, a high school in Brookhaven, Mississippi
• Missouri Scholars Academy, a summer program at the University of Missouri
• MSA Mutfak Sanatlari Akademisi, a culinary arts institute in Istanbul, Turkey
• Modern Sciences and Arts University, a university in October City, Egypt
• Monash Student Association, the student government association of Monash University, Melbourne, Australia
• Muslim Students' Association, a group dedicated to Islamic societies on college campuses in Canada and the United States

科學及醫學

• 5-甲氧基水楊酸（5-Methoxysalicylic acid）：一種化合物，在MALDI質譜中用作基質。
• 甘露醇鹽瓊脂（Mannitol salt agar）：一種微生物培養基。
• Measurement systems analysis, the analysis of the process of obtaining measurements
• 甲基磺酸（Methanesulfonic acid）
• Middle Stone Age, a period of African prehistory
• 多重序列比對（Multiple sequence alignment）是對三個以上的生物學序列，如蛋白質序列、DNA序列或RNA序列所作的序列比對。
• Multiple system atrophy, a degenerative neurological disorder
• Multiscale approximation 或多解像度分析（multiresolution analysis）
• Morphosyntactic alignment (linguistics)
• Measure of sampling adequacy, a quality criterion for a correlation matrix as prequisition for factor analysis (statistics)

科技

• Hewlett Packard Modular Smart Array, the primary storage device for some data centres
• Mail submission agent, a computer program used when sending email
• Master service agreements, a master agreement defining services to be delivered
• Microsoft Access：一種資料庫管理系統
• Mobile Service Architecture, a combination of Java ME extensions
• MSA，MIPS SIMD 架構
• Multi-source agreement, an agreement between multiple manufacturers to make products which are compatible across vendors

運輸

• MSA Garratt, a steam engine class of the Western Australian Government Railways
• 公路服務區（Motorway service area）
• Muskrat Dam Airport, an airport at Muskrat Dam, Ontario, Canada (IATA code)

其他

• 馬來語（Malay language）
• Mapping Services Agreement, a licensing contract between local authorities in the United Kingdom and suppliers of geographic data
• Matthew Shepard Act, 2009 United States federal hate-crime legislation
• Market Square Arena, an indoor arena in Indianapolis, Indiana demolished in 2001
• Medical savings account, a tax-deferred deposit account for medical expenses
• 都會統計區, a geographical area associated with an urban area of 50,000 people or more, as defined by the United States Office of Management and Budget
• United States Micropolitan Statistical Area, a geographical area associated with an urban area of 10,000 to 49,999 people, as defined by the United States Office of Management and Budget
• Minimum safe altitude, used for safely navigating aircraft over terrain or large structures
• 現代標準阿拉伯語（Modern Standard Arabic）
• Tobacco Master Settlement Agreement, an agreement reached between U.S. States and major tobacco companies
• MSA Kyotei, a Japanese abbreviation in reference to U.S. and Japan Mutual Defense Assistance Agreement.
• Minesweeper Auxiliary