AM, Am, or am may refer to:

• Master of Arts (postgraduate), (Artium Magister) alternative abbreviation for a Master's degree in Arts
• Americium, a chemical element with symbol Am
• Arthur-Merlin protocol, an interactive proof system in computational complexity theory
• Automated Mathematician, an artificial intelligence program
• Attometre (am), a unit of length (equal to 10^?18 m)
• Order of Australia member (postnominal)
• Accelerated Math in the US or Accelerated Maths in the UK

In engineering

• Advanced Manufacturing
• Avancier Method
• Application Management life cycle of computer application
• Amplitude modulation, the technique used for AM radio broadcasting

In medicine and psychology

• Adrenomedullin, a protein
• Autobiographical memory

In timekeeping

• Ante Meridiem, in 12-hour clock notation, Latin for "before noon" (also written A.M., a.m., and am), in contrast to post meridiem (p.m., "after noon")
• Anno Mundi, a Calendar era counting from the creation of the world based on Jewish mythology.
• Anno Martyrum, used in the Coptic calendar

In communications

• "Away message", see status message (IM)
• "Above mentioned" in Internet slang
• Airmail
• AM broadcasting, radio broadcasting using amplitude modulation

In entertainment

• AM (ABC Radio), radio current affairs programme
• A.M. (musician), musician Andrew Moore
• A.M. (album), album by rock band Wilco
• AM (fictional computer), a fictional evil supercomputer in the short story I Have No Mouth, and I Must Scream
• A minor (Am), a minor chord in music
• American Morning, the morning news program on CNN
• A fictional petroleum company in Grand Theft Auto: Liberty City Stories

In geography

• Americas (as in Pan-Am and Trans-Am)
• Armenia (ISO country code AM)
• Anguilla (MARC country code am)
• Amazonas State, Brazil
• Amharic language (ISO 639-1 language code am)
• Amran Governorate, Yemen (ISO 3166-2:YE)

In transportation

• Aston Martin
• Aeroméxico (IATA airline designator)
• Asia Miles, a Cathay Pacific travel reward programme
• Arkansas and Missouri Railroad, a short-line railroad headquartered in Springdale, Arkansas
• A.M. (1906 automobile), an early French automobile

In the military

• Air Marshal, a military rank in the Royal Air Force and many Commonwealth air forces
• Air Medal, a military decoration
• Minesweeper (ship), U.S. Navy 1921 warship classification code
• Anti-materiel rifle, a weapon for use against material rather than combatants
• Aviation Structural Mechanic, a U.S. Navy rating

In other fields

• Attacking midfielder in soccer
• Assembly Member of the National Assembly for Wales or London Assembly
• .am, the top-level domain for Armenia
• Asset Management Assets Management
• Air mass in meteorology
• Airmass in astronomy

See also

• A&M
• AM2

ca:Am cs:AM da:AM (flertydig) de:AM es:Am eo:Am eu:AM fr:AM ko:AM it:AM he:Am lv:AM nl:Am ja:AM no:AM nn:AM uz:Am pl:AM pt:AM ksh:AM (Watt ?ßß datt?) ru:Am simple:AM sl:Am fi:Am sv:AM vi:AM tr:Am zh:AM

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