MS

MS, ms, Ms, M.S., etc. may refer to:

Arts and entertainment

 * Ms. (magazine), an American feminist magazine
 * Metal Storm (webzine), a heavy metal website based in Estonia

Businesses and organizations

 * MS-13, criminal gang
 * Missionaries of La Salette, a Catholic male religious order
 * Młodzi Socjaliści (Young Socialists), a former Polish socialist youth organization
 * Morgan Stanley, a US investment bank (NYSE stock symbol: MS)
 * Mjólkursamsalan, an Icelandic dairy company
 * Microsoft, an American multinational corporation and technology company
 * Motorola Solutions, an American communications equipment manufacturer

Educational qualifications

 * Master of Science, a master's degree in the field of science
 * Master of Surgery, an advanced medical degree
 * Master Sommelier, a terminal degree in the field of wine
 *  Mastère spécialisé, a French postgraduate grande école master's degree

Medicine

 * Mitral stenosis, narrowing of the mitral valve of the heart
 * Morphine sulfate, an opiate pain-relieving drug
 * Multiple sclerosis, a disease of the nervous system

Military

 * Master seaman, a non-commissioned member rank of the Canadian Navy
 * Mess Management Specialist, a former U.S. Navy occupational rating now covered by culinary specialist

Places

 * Mato Grosso do Sul, Brazil, postal code MS
 * Mississippi, a U.S. state, official abbreviation
 * Montserrat, Caribbean island nation (ISO 3166-2 country code: MS)

Computing

 * .ms, the top level Internet domain for Montserrat in the Caribbean
 * Master System, a third-generation video game console produced by Sega
 * Microsoft, an American-based global software company
 * Mobile station, a piece of equipment for communication with a mobile network

Units of measure

 * Megasiemens (MS), and millisiemens (mS), multiples of the unit of electric conductance siemens
 * Metre per second (m/s), a unit of velocity (speed)
 * Metre second (m s), a unit of absement (sustained displacement of an object)
 * Millisecond (ms), and megasecond (Ms), multiples of the unit of time second

Other uses in science and technology

 * Surface-wave magnitude (Ms), a seismic scale
 * Solar mass (MS), an alternate symbol to M⊙
 * Mass spectrometry, a method of determining the chemical composition or exact mass of molecules
 * Master of Science, a postgraduate university master's degree
 * Mesylate, a chemical salt
 * Spin quantum number, $$m_s$$

Transportation

 * Egyptair, by its IATA code "MS"
 * Motor ship, ship prefix
 * Chennai Egmore railway station, code MS

Other uses

 * Ms., a common title for women that does not indicate marital status
 * MS (cigarette), an Italian brand of cigarettes
 * MS (satellite), a series of four Soviet satellites launched in 1962
 * Malay language, of Southeast Asia (ISO 639-1 language code: ms)
 * Manuscript, abbreviation (ms.) for a written or typed document
 * Member of the Senedd (formerly Assembly Member), Welsh Parliament legislator
 * Memoriae Sacrum (Latin for "Sacred to the Memory"), an epitaph
 * Multan Sultans, a professional Twenty20 franchise cricket team in the Pakistan Super League