MN

• Mongolia (ISO 3166-1 country code)
• Montenegro (former ISO 3166 country code)
• Monaco (FIPS 10-4 country code)
• Minnesota, US (postal abbreviation)
• Manipur, a state in northeast India
• Province of Mantua, or of Mantova, in Italy
• County Monaghan, in Ireland (license plate code)

• Mongolian language (ISO 639-1 code)
• mn (digraph), a combination of letters used in spelling

• Manganese, symbol Mn, a chemical element
• .mn, the Internet country code top-level domain for Mongolia
• Meganewton (MN), a unit of force equal to one million newtons
• millinewton (mN), one-thousandth of a newton
• Membranous nephropathy
• Minimum mode, a hardware mode available to Intel 8086 and 8088 processors
• Number average molecular weight (M_n)
• Mammal Neogene zones, a system of biostratigraphic zones in the stratigraphic record used to correlate mammal-bearing fossil localities of the Neogene period of Europe

• Kulula.com (IATA airline designator MN)
• Metro-North Railroad, a commuter railroad in New York City
• Indian Railways station code for Meenambakkam railway station, Chennai, Tamil Nadu, India
• Station code for Madiun railway station, East Java, Indonesia

• MN (film), a 1954 Filipino movie
• Marine Nationale, the French Navy
• Merle Norman Cosmetics, an American cosmetic company
• Model number, an identifying number for each particular type of product a manufacturer makes

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