MSL

MSL may refer to:

University degrees

 * 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

Business

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

Organizations

 * 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

Places

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

Science and technology

 * 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

Sign languages

 * 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

Sports

 * 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