MSD

MSD may refer to:

People

 * Mahendra Singh Dhoni or MSD (born 1981), Indian cricketer

Companies

 * Merck Sharp and Dohme, an international name of Merck & Co., the U.S. and Canada pharmaceutical company formerly related to German Merck KGaA
 * MSD Capital, a private investment firm owned by personal computer entrepreneur Michael Dell
 * MSD Ignition, a company that specializes in automotive-ignition components; MSD stands for "multiple spark discharge"
 * Motor Sports Developments, an automotive-engineering company based in Milton Keynes, United Kingdom; see X25XE

Computers

 * Mass storage device, like a USB key
 * Memory Stick Duo, a type of solid digital data storage device
 * Microsoft Diagnostics, a computer diagnostic program shipped with various versions of DOS and Microsoft Windows operating systems
 * Modem Sharing Device
 * MSD Super Disk, a floppy-disk drive for Commodore 8-bit systems
 * miniSD/microSD

Schools and school districts

 * Marjory Stoneman Douglas High School, Florida, United States
 * Stoneman Douglas High School shooting
 * Marshall School District in Marshall, Arkansas, United States
 * Maryland School for the Deaf, United States
 * Milford School District, a school district in Milford, Delaware, United States
 * Missouri School for the Deaf
 * Moscow School District in Moscow, Idaho, United States

Other organizations

 * Meclîsa Sûriya Demokratîk or Syrian Democratic Council, the political wing of the Syrian Democratic Forces in Syria
 * Metro de Santo Domingo, a rapid-transit system in Santo Domingo, the capital of the Dominican Republic
 * Ministry of Social Development (New Zealand)
 * Mission Science Division, a group of scientists, research fellows and young graduates working at the European Space Agency
 * Mladí sociální demokraté or Young Social Democrats (Czech Republic), a social democratic youth organization in the Czech Republic
 * Mladí sociálni demokrati or Young Social Democrats (Slovakia), a social democratic youth organization in Slovakia
 * Mobile Security Deployments, the U.S. Diplomatic Security Service's tactical unit
 * MSD (Межправительственный совет дорожников) or Intergovernmental Council of Roads, the road authority organisation of the Commonwealth of Independent States

Science and medicine

 * Macromolecular Structure Database, one of the services provided by the European Bioinformatics Institute
 * Major hypersomnolence disorder
 * Marine sanitation device, used in the Regulation of ship pollution in the United States
 * Mars solar date
 * Mass spectrometric detector, a type of chromatography detector
 * Mean squared displacement, a statistical measure of random motion
 * Multiple sulfatase deficiency, a very rare form of metachromatic leukodystrophy
 * Musculoskeletal disorders

Other uses

 * Magnetic switchable device, a passive magnetic mount that can be activated or deactivated
 * Master Scuba Diver, a certification level in recreational scuba diving
 * Master of Science in Dentistry, a Dental degree
 * Master of Sport Directorship (MSD) at Manchester Metropolitan University
 * Mean Shortest Distance, in the context of the PGP Web of trust
 * Minimum string distance, the number of insertions, deletions, or substitutions to transform one string into another in Typing
 * Moorside railway station, England National Rail station code
 * Moscow Summer Time
 * Most significant digit