Tag

Tag, TAG, or tagging may refer to:

Identification and tracking

 * Tag (graffiti), a form of graffiti signature
 * Dog tag (military), an ID tag worn by military personnel
 * Ear tag, an ID tag worn by farm animals
 * Electronic tagging, a form of surveillance using a device attached to a person or vehicle
 * Kimball tag, predecessor to the barcode, used to identify products to a stock control system
 * Pet tag, an ID tag worn by pets
 * QR code or mobile tag, a type of matrix barcode
 * RFID tag, passive electronic inventory stock control technology
 * Toe tag, an ID tag worn by dead bodies in the morgue
 * Triage tag, a tool used to classify victims of mass casualty incidents
 * Tagging (stamp)

Fictional characters

 * Tag (comics), a Marvel character
 * Tag, the main character of the game ModNation Racers
 * Tag, the main character of the TV series Rimba Racer

Films

 * Tag (2015 film), a 2015 Japanese film
 * Tag (2018 film), a 2018 American comedy film

Music

 * Tag (barbershop music), a dramatic variation in the last section of a song
 * TAG Recordings, a record label
 * Producer tag, a brief sound clip as the signature of the producer of the music track
 * TAG, an acronym for the Pakistani musical group The All Girl Band

Television

 * Tag (TV channel), a defunct Philippine TV channel
 * T@gged, a 2016–2018 American web series
 * "Tagged" (The Penguins of Madagascar episode)
 * "The Tag" (The Amazing World of Gumball episode)

Theatre

 * TAG Theatre Company, a touring theatre company in Scotland
 * The Theatre Arts Guild or TAG, a community theatre in Halifax Nova Scotia

Other arts, entertainment, and media

 * Tag (advertisement), a sportswear commercial
 * Tag: The Power of Paint, a computer game
 * Tag Entertainment, a film production company
 * Tagged (website), a social networking site
 * Tagging (graffiti), a form/style of graffiti signature
 * Post-credits scene, a clip appearing at the end of some media

Brands and enterprises

 * TAG Body Spray
 * Tag Games, developer in Scotland
 * TAG Group, Luxembourg
 * TAG Heuer, watchmaker
 * TAG Oil, New Zealand
 * Tennessee, Alabama and Georgia Railway, reporting mark
 * Transportes Aéreos Guatemaltecos, a Guatemalan airline

Computing

 * TAG (BBS), bulletin board software
 * Tag (Facebook), a link in Facebook
 * Tag (metadata) (a more flexible form of categories)
 * Tag (programming), for passing parameters
 * Tags (Unicode block), with formatting tag characters
 * Tag, an element in several markup languages
 * HTML tag
 * Revision tag, for a specific revision
 * Audio tag, see
 * Tag files, an index of source code identifiers
 * Tag system, a deterministic computational model
 * Tag URI, a unique identifier protocol
 * Technical Architecture Group, a W3C group
 * Tag management system, used to manage the life cycle of digital marketing tags

Government and political organizations

 * State adjutant general, US
 * Tactical Assault Group, Australia
 * Tamils Against Genocide
 * Treatment Action Group, an HIV/AIDS activist organization
 * -Tag, a German word for "Diet" or "Assembly" (see: Bundestag)

Language and education

 * Tag (Hebrew writing), a decoration
 * Tag (LeapFrog), an interactive reading device
 * Hashtag
 * Part-of-speech tagging
 * Tag question, a statement converted to a question
 * Talented and Gifted program, in education
 * School for the Talented and Gifted, Dallas, Texas, US
 * Tree-adjoining grammar

Natural science

 * 3-methyladenine DNA glycosylase I, called TAG in E. coli
 * Protein tag, a biochemistry method
 * Skin tag, a small benign tumour
 * Theoretical and Applied Genetics, a scientific journal
 * Timneh African grey, a parrot
 * Triglyceride or Triacylglycerol, often shortened to TAG
 * Tumor-associated glycoprotein, a type of protein
 * TAG, a stop codon

People with surname Tag

 * Katrin Lea Tag (born 1972), German scenic designer and costume designer
 * Kezban Tağ (born 1993), Turkish footballer

Sport

 * Tag (game), a playground game
 * Tag (horse), an 18th-century thoroughbred racehorse
 * Tag out, a play in baseball
 * Tag team, a type of wrestling
 * Alex Tagliani, Canadian racecar driver, nicknamed "Tag"

Other uses

 * Bohol–Panglao International Airport, Philippines; opened in 2018
 * Tagbilaran Airport, Bohol, Philippines; closed in 2018
 * Topological abelian group, in mathematics
 * Trans Austria Gas Pipeline
 * Transcendental argument for the existence of God