Manuscript, a hand-written document

Microsoft, an American software company

Multiple sclerosis, a chronic, inflammatory, demyelinating disease

Mississippi, a state in the United States of America

Mass spectrometry, a method of determining the chemical composition or exact mass of molecules

Malay language's ISO 639-1 language code

Morgan Stanley, an American investment bank

EgyptAir's IATA code

Mara Salvatrucha, large criminal gangs in Central America and the U.S.

Ms. (magazine), an American feminist magazine

Ms., an honorific title for women

Master of Science, a postgraduate university Master's degree

Master of Surgery, an advanced medical degree

Megasiemens or Millisiemens, units of electric conductance based on the siemens

.ms, the Internet country code top-level domain for Montserrat

Millisecond ms, a unit of time equal to one thousandth of a second

Mess Management Specialist, a U.S. Navy occupational rating superseded by the term Culinary Specialist

Master Seaman, a non-commissioned member rank of the Canadian Navy

SM (disambiguation)

Spesmilo, an obsolete currency unit whose symbol resembles mS

Mobile station, equipment used for communication

Motor ship, a ship propelled by motor

M&S (disambiguation)