Dág (Hungary), a villageDąg, a village in PolandDAG, the British National Rail station code for Dalgety Bay railway station, ScotlandDAG, the IATA code for Barstow-Daggett Airport, California, USADag (lunar crater), a minor crater on the moon (named after the Scandinavian first name, see below)
People
David Alan Grier (born 1956), American actor and comedian
Culture
Dag or Dagr, the god of daytime in Norse mythology and a common Scandinavian first nameDAG (TV series), a television series starring David Alan GrierRick "Dag" Dagless, a character on the TV series Garth Marenghi's DarkplaceDAG (newspaper), the name of a former freely distributed Dutch newspaperDemented Are Go, Welsh psychobilly bandDAG (band), a funk alternative band from North CarolinaDAG (former Yugoslav band), a former Yugoslav acoustic rock band
Science and technology
DAG Technology, the technology of a family of network traffic capture adaptersDAG, Diacylglycerol or diglyceride, a type of molecule important in physiology and used as food additivesDAG, Directed acyclic graph, a type of graph used in computer science and mathematicsdag, symbol for decagram, a unit of mass equal to ten gramsdaG, symbol for decagauss, a unit of magnetic flux density (a.k.a. magnetic induction) equal to ten gaussdag, abbreviation of Aquadag, a graphite-based electrode coating commonly found on cathode-ray tubesDAG, Database Availability Group, a Microsoft Exchange Server 2010 high availability technologyDAG, Data Address Generator, a mechanism which generates temporary memory addresses for data that is transferred between memory and registers in a Digital Signal Processor
Other uses
dag, the ISO 639-3 code for the Dagbani language spoken in GhanaDag, a clump of feces stuck to the wool of a sheep (Australia and New Zealand)Dag, used in Australia and New Zealand as a term of friendly abuseDag (subculture), an Australian subculture (originally from preceding use)Dagging, in sheep husbandry, removing dags from a sheepDAG, Deputy Attorney General, a high-ranking post in a national department of justice or lawDAG, Defense Acquisition Guide, a guidebook for military acquisition in the USDeutsche Angestellten-Gewerkschaft or German Salaried Employees' Union, a former independent trade union in Germany