MSD may refer to:

People

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

Companies

  • Merck Sharp and Dohme (MSD), 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

Organizations

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#Marine sanitation devices
  • Mars solar date
  • Mass spectrometric detector, a type of chromatography detector
  • Mean squared displacement, a statistical measure of random motion
  • Mean signed deviation, a measure of statistical deviation
  • 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, 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 minimum string distance error rate
  • Station code for Moorside railway station, England
  • Moscow Summer Time
  • Most significant digit
  • Postal code for Msida, Malta
  • Masjid railway station (station code: MSD), Mumbai, India