AG

A&G, AG, Ag or ag may refer to:

Organizations

A&G Railroad (former reporting mark)
Action Group (Nigeria), a political party during the Nigerian First Republic
Aktiengesellschaft, a German name for a corporation that is limited by shares, owned by shareholders, and may be traded in a stock market
Assemblies of God, the world's largest Pentecostal organization
Associated Group, a Pakistani company

AG Weinberger, guitar player, producer, singer/songwriter located in Bucharest, Romania
Aurela Gaçe, Albanian singer
Adriano Goldschmied, an Italian fashion designer
Adrianne Gonzalez, American musician who goes by the stage name AG
Showbiz and A.G., the hip-hop MC whose name abbreviates the phrase André the Giant

.ag, the ccTLD for Antigua and Barbuda
Ág, a village in Hungary
Agrigento, a Province of Italy in the ISO 3166-2:IT code
Antigua and Barbuda, a twin-island nation lying between the Caribbean Sea and the Atlantic Ocean
Argeş, a county in Romania in the ISO 3166-2:RO code

Agamous, a homeobox gene from Arabidopsis thaliana and which plays a role in the ABC model of flower development
Antigen, an immunology term for a substance that stimulates an immune response
Astronomische Gesellschaft, a German astronomical society
Anion gap
Attogram, the SI derivative unit of mass
Attribute grammar
AG is sometimes used as a shorthand for the inequality of arithmetic and geometric means
Silver, a chemical element with symbol Ag from the Latin Argentum

Adjutant general, the Army branch responsible for personnel
Aerographer's Mate, a rating or specialty in the US Navy that deals with weather and oceanography
American Holland-class submarine (Amerikansky Golland), class of Imperial Russian submarines
Army green, the color of the U.S. Army service uniform since 1955 which has also been adopted by the armies of many other nations of the world
Miscellaneous Auxiliary, hull classification for a type of United States Navy support ship

Administrator-General, head of government in Namibia prior to independence in 1990
Allocation group, a subvolume in a file system
Anno Graecorum, the Seleucid era, an ancient calendar
Attorney general, government lawyer or law enforcement officer in several legal systems
Atuagagdliutit/Grønlandsposten, one of the two nationwide newspapers in Greenland
AG, dominical letter of a leap year starting on Sunday