Look up MSL in Wiktionary, the free dictionary.

MSL may refer to:

• Master of Sustainability Leadership, a master's degree in sustainability leadership studies
• Master of Science in Leadership, a master's degree in leadership studies
• Master of Studies in Law, a master's degree for students who wish to study the law but do not want to become attorneys
• Master of Science of Law, a master's degree for students who wish to study the law but do not want to become attorneys

• Medical science liaison, a healthcare consulting professional
• Manning Selvage & Lee, now MSLGROUP, public relations firm, part of Publicis Groupe

• RoboCup Middle Size League, robot soccer competition
• MBCGame StarCraft League, StarCraft tournament in Korea
• Milwaukee School of Languages, in Wisconsin, US
• Microscopical Society of London, original incarnation of the Royal Microscopical Society

• Marshall railway station, Victoria, Australia, station code
• Northwest Alabama Regional Airport, US, IATA code

• Mars Science Laboratory, a NASA mission which landed rover Curiosity
• Master Subsidy Lock, a type of cell phone SIM lock used by U.S. CDMA carriers
• Materials Science Laboratory, an ESA payload on ISS
• Mean sea level
• Metal Shading Language, used for Apple's Metal graphics API
• Microgravity Science Laboratory, first flown on STS-83
• Maximum segment lifetime of TCP segment in networking
• Midsternal line, an imaginary plane running through the median section of a sternum
• mIRC scripting language (abbreviated as mSL), a scripting language embedded in mIRC, an IRC client, used for automation of actions (usually for bots) and customization of the client
• Mission and Spacecraft Library, a website that tracks satellites
• Moisture sensitivity level, for semiconductor handling
• Multilayer soft lithography, a fabrication process
• Multiple single-level, computer security systems

• Macedonian Sign Language, the sign language of the deaf community in Macedonia
• Malagasy Sign Language, a sign language used for communication among hearing impaired people in Madagascar
• Maritime Sign Language, a sign language descended from British Sign Language
• Mongolian Sign Language, a sign language used in Mongolia
• Moroccan Sign Language, a sign language of the deaf community of Tetouan and some other cities of Morocco

• Malaysia Super League, a top-tier football league in Malaysia
• Major Series Lacrosse, a Senior A box lacrosse league in Canada
• Major Soccer League, an indoor soccer league in the United States from 1978 to 1992
• Memphis Sport Live, radio show, Tennessee, US
• Mzansi Super League, a cricket tournament in South Africa

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