# MSA

MSA or M.S.A. may refer to:

## Organizations and businesses
### Public services and agencies

* China Maritime Safety Administration, a PRC Coast Guard
* Maritime Safety Agency, now the Japan Coast Guard
* Indonesian Maritime Security Agency
* Pakistan Maritime Security Agency
* Mutual Security Agency, established by the U.S. Mutual Security Act (1951), and distributed aid to Europe after the Marshall Plan

### Academic

* Metaphysical Society of America, a society promoting the study of philosophy and metaphysics
* Microscopy Society of America, a society for the promotion of microscopy
* Mineralogical Society of America, an organization for the advancement of mineralogy
* Mycological Society of America, a society promoting the study of fungi

### Commercial

* Malaysia–Singapore Airlines, the former name for Singapore Airlines and Malaysia Airlines
* Masonic Service Association, a Freemasonry publishing resource
* Master service agreement, a master agreement defining services to be delivered
* Mine Safety Appliances, a manufacturer of industrial safety clothing and equipment
* ICAO code for Poste Air Cargo

### Other

* Maine Snowmobile Association, the snowmobile association of Maine
* Manchester Society of Architects, a professional society for architects in the Greater Manchester area, United Kingdom
* Motor Sports Association, the governing body for motorsport in the United Kingdom
* Mad Science Alliance, a fictional organization in and the working title of the 2008 role-playing game Monster Lab
* Movement for the Salvation of Azawad

## Education
### Degrees

* Master of Advanced Studies in Sports Administration, a sports management degree
* Master of Accountancy, an accounting degree
* Master of Science in Administration, a degree providing preparation for administrative positions

### Schools and societies

* Mackintosh School of Architecture, an architecture school in Glasgow, Scotland
* Manchester School of Architecture, an architecture school in Manchester, England
* 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
* Montessori School of Anderson, a private school in Anderson, South Carolina
* MSA Mutfak Sanatlari Akademisi, a culinary arts institute in Istanbul, Turkey
* Modern Sciences and Arts University, a university in October City, Egypt
* Muslim Students' Association, a group dedicated to Islamic societies on college campuses in Canada and the United States

## Science and medicine

* 5-Methoxysalicylic acid, a chemical compound used as a matrix in MALDI mass spectrometry
* Mannitol salt agar, an agar used in microbiology
* Measurement systems analysis, the analysis of the process of obtaining measurements
* Methanesulfonic acid, an organic sulfonic acid
* Middle Stone Age, a period of African prehistory
* Multiple sequence alignment, an alignment of three or more biological sequences
* Multiple system atrophy, a degenerative neurological disorder
* Multiscale approximation or multiresolution analysis
* Morphosyntactic alignment (linguistics)

## Technology

* Message submission agent, a computer program used when sending email
* Microsoft Access, a database management system
* Microsoft Account, a single sign-on web service
* Mobile Service Architecture, a combination of Java ME extensions
* Multi-source agreement, an agreement between multiple manufacturers to make products which are compatible across vendors
* Measurement systems analysis, in quality management a specially designed experiment that seeks to identify the components of variation in the measurement
* Microservice architecture, Considered by some as a variant of the service-oriented architecture (SOA), it is a method of developing software applications as a suite of independently deployable, small, modular services

## Transportation

* WAGR Msa class, a class of steam locomotive of the Western Australian Government Railways
* Minimum safe altitude, used for safely navigating aircraft over terrain or large structures
* Motorway service area, a public rest area
* Muskrat Dam Airport, an airport at Muskrat Dam, Ontario, Canada (IATA code)

## Other uses

* Magnuson-Stevens Act, common alternate abbreviation of 1976 Magnuson–Stevens Fishery Conservation and Management Act (MSFCMA)
* Mainland Southeast Asia linguistic area, a sprachbund in Southeast Asia
* Malay language, in the ISO 639-2 and ISO 639-3 language code
* 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
* Meritorious Service Award, an award of the Civil Air Patrol in the United States
* Metropolitan statistical area, 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
* 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
* Modern Standard Arabic, also known as Literary Arabic, the standard and literary variety of Arabic used in writing and in most formal speech
* 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