Identification

• Pet tag, an ID tag worn by pets
• Ear tag, an ID tag worn by farm animals
• Dog tag (military), an ID tag worn by military personnel
• A form of graffiti
  Graffiti
  Graffiti is the name for images or lettering scratched, scrawled, painted or marked in any manner on property....
  
   signature
• A vehicle registration plate
  Vehicle registration plate
  A vehicle registration plate is a metal or plastic plate attached to a motor vehicle or trailer for official identification purposes. The registration identifier is a numeric or alphanumeric code that uniquely identifies the vehicle within the issuing region's database...
  
  
• A QR code
  QR code
  A QR code is a type of matrix barcode first designed for the automotive industry. More recently, the system has become popular outside of the industry due to its fast readability and comparatively large storage capacity. The code consists of black modules arranged in a square pattern on a white...
  
   is a mobile phone tag.

Computing

• Tag (metadata)
  Tag (metadata)
  In online computer systems terminology, a tag is a non-hierarchical keyword or term assigned to a piece of information . This kind of metadata helps describe an item and allows it to be found again by browsing or searching...
  
  , an index term assigned to a piece of information
• Tag URI
  Tag URI
  Tag URI is a universal unique identifier protocol commonly used in various internet-related technologies and associated with data storage and transfer systems such as YAML....
  
  , a unique identifier protocol used in internet technologies
• Tag (programming)
  Tag (programming)
  In programming, a tag is an argument to a subroutine that determines other arguments passed to it, which is used as a way to pass indefinite number of tagged parameters to the subroutine; notably, tags are used for a number of system calls in AmigaOS v2.0 and onwards.-In AmigaOS:In earlier versions...
  
  , a method for passing parameters to subroutines
• TAG (BBS)
  TAG (BBS)
  T.A.G. is a DOS-based bulletin board system software program, released from 1986 to 2000.T.A.G. was written in Borland Pascal and is free for business or personal use ....
  
  , a bulletin board software program
• HTML tag, a component of the HTML programming language
• Knowledge tag, a type of meta-information that captures knowledge about an information resource
• Revision tag
  Revision tag
  A revision tag is the term often used to define a textual label that can be associated with a specific revision of a project maintained by a revision control system. This allows the user to define a meaningful name to be given to a particular state of a project that is under version control...
  
  , a label for a specific revision of a project
• Tag system
  Tag system
  A tag system is a deterministic computational model published by Emil Leon Post in 1943 as a simple form of Post canonical system. A tag system may also be viewed as an abstract machine, called a Post tag machine —briefly, a finite state machine whose only tape is a FIFO queue of unbounded length,...
  
  , a deterministic computational model
• Using a tag editor
  Tag editor
  A tag editor is a piece of software that supports editing metadata of multimedia file formats, rather than the actual file content...
  
   to edit the metadata of multimedia content
• The entries in tag files generated by ctags
  Ctags
  Ctags is a program that generates an index file of names found in source and header files of various programming languages.Depending on the language,functions,variables,class members,macros and so onmay be indexed....
  
  , indexes to identifiers in source code

Language and education

• Tag (LeapFrog)
  Tag (LeapFrog)
  Tag is a pen-shaped book reader onto which audio from specific books can be downloaded. Then, the pen can be scanned across the corresponding paper book so that the pen reads it aloud. The user can also play various games through this technique. LeapFrog Enterprises introduced it as the successor...
  
  , an interactive reading device
• Part-of-speech tagging
  Part-of-speech tagging
  In corpus linguistics, part-of-speech tagging , also called grammatical tagging or word-category disambiguation, is the process of marking up a word in a text as corresponding to a particular part of speech, based on both its definition, as well as its context—i.e...
  
  , the process of marking up words as corresponding to a particular part of speech
• Tag question
  Tag question
  A question tag or tag question is a grammatical structure in which a declarative statement or an imperative is turned into a question by adding an interrogative fragment . For example, in the sentence "You're John, aren't you?", the statement "You're John" is turned into a question by the tag...
  
  , a grammatical structure that converts a statement to a question
• Talented and Gifted program, a type of educational curriculum
  • School for the Talented & Gifted
    School for the Talented & Gifted
    The School for the Talented and Gifted at the Yvonne A. Ewell Townview Magnet Center is a public college preparatory magnet secondary school located in the Oak Cliff area of Dallas, Texas . The school enrolls students in grades 9-12 and is a part of the Dallas Independent School District...
    
    , Dallas, Texas
• Tree-adjoining grammar
  Tree-adjoining grammar
  Tree-adjoining grammar is a grammar formalism defined by Aravind Joshi. Tree-adjoining grammars are somewhat similar to context-free grammars, but the elementary unit of rewriting is the tree rather than the symbol...
  
  , a grammar framework

Sport

• Tag (game)
  Tag (game)
  Tag is a playground game played worldwide that involves one or more players chasing other players in an attempt to tag or touch them, usually with their fingers. There are many variations...
  
  , a playground game
• TaG, a kart racing class
• Tag out
  Tag out
  In baseball, a tag out, sometimes just called a tag, is a play in which a baserunner is out because he is touched by the fielder's hand or glove holding a live ball while the runner is in jeopardy...
  
  , a play in baseball
• Tag team
  Tag team
  Tag team professional wrestling is a variation in which matches are contested between teams of multiple wrestlers. A tag team may comprise two wrestlers who normally wrestle in singles competition, but more commonly are made of established teams who wrestle regularly as a unit and have a team name...
  
  , a type of wrestling

Media

• Tag (advertisement)
  Tag (advertisement)
  Tag is a television and cinema advertisement launched by Nike Inc. in 2001 to promote its line of sportswear in the United States. It was one of four pieces forming the television component of the $25m "Play" campaign, which had been running for several months. Tag was created by advertising agency...
  
  , a Nike sportswear commercial
• Tag (barbershop music)
• Tag (comics)
  Tag (comics)
  Tag is a fictional character, a Puerto Rican mutant appearing in comic books published by Marvel Comics. He first appeared in New Mutants, vol. 2 #7 and was a member of the student body of the Xavier Institute and the Hellions squad therein.-Fictional character biography:Brian Cruz came to Emma...
  
  , a Marvel character
• Tag: The Power of Paint
  Tag: The Power of Paint
  Tag: The Power of Paint is a first-person action and puzzle hybrid video game. The game was developed in 2009 for Microsoft Windows by Tag Team, a group of students from the DigiPen Institute of Technology. The game's core mechanic is the use of a special paint sprayed from the player's paint gun...
  
  , a computer game
• Tag Entertainment
  Tag Entertainment
  Tag Entertainment was largely founded by Steve Austin and John T. Botti, Director and became a publicly held film production company formerly headquartered in Santa Monica, California...
  
  , a film production company
• TAG Recordings
  TAG Recordings
  TAG Recordings was an imprint of Atlantic Records started in 1996. TAG had been intended to host Atlantic's stable of alternative rock artists and capitalize on the wild popularity of alternative and grunge rock at that time. The label handled artists such as Fountains of Wayne, The Inbreds, and...
  
  , a record label
• TAG Theatre Company
  TAG Theatre Company
  TAG Theatre Company is a theatre company established in 1967 in Glasgow, Scotland as the outreach arm of the Citizens' Theatre in Glasgow, and was known as the Citizens' Theatre for Youth.-Background:...
  
  , the longest established touring theatre company in Scotland
  Scotland
  Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...
  
  
• "Tagged" (The Penguins of Madagascar episode)
• The Andy Griffith Show
  The Andy Griffith Show
  The Andy Griffith Show is an American sitcom first televised by CBS between October 3, 1960, and April 1, 1968. Andy Griffith portrays a widowed sheriff in the fictional small community of Mayberry, North Carolina...
  
  , a TV series
• Post-credits scene
  Post-credits scene
  A post-credits scene is a short clip that appears after some or all of the closing credits of a film have run...
  
  , a clip appearing at the end of some media
• Tag, the main character of "ModNation Racers
  ModNation Racers
  ModNation Racers is a kart racing game developed by United Front Games for the PlayStation 3 and PlayStation Portable. User generated content will be a central aspect of the game, such that it uses the same "Play, Create, Share." adage as LittleBigPlanet to convey its basis in online user-generated...
  
  ".

Natural science

• Protein tag
  Protein tag
  Protein tags are peptide sequences genetically grafted onto a recombinant protein. Often these tags are removable by chemical agents or by enzymatic means, such as proteolysis or intein splicing. Tags are attached to proteins for various purposes....
  
  , a biochemistry method
• Skin tag, a small benign tumour
• Theoretical and Applied Genetics
  Theoretical and Applied Genetics
  Theoretical and Applied Genetics is a peer-reviewed scientific journal published by Springer Science+Business Media. The journal publishes articles in the fields of plant genetics, genomics, and biotechnology. It was established in 1929 as Der Züchter, which name was changed to the current one in...
  
  , a scientific journal
• Trans Austria Gas Pipeline
  Trans Austria Gas Pipeline
  The Trans Austria Gas pipeline is a natural gas pipeline that leads from the Slovak-Austrian border at Baumgarten an der March to Arnoldstein in the south, near the border with Italy. Natural gas originating from Russia is transported to and used in Italy and Austria...
  
  
• Triglyceride
  Triglyceride
  A triglyceride is an ester derived from glycerol and three fatty acids. There are many triglycerides, depending on the oil source, some are highly unsaturated, some less so....
  
  , a chemical compound
• Tumor-associated glycoprotein
  Tumor-associated glycoprotein
  Tumor-associated glycoproteins are glycoproteins found on the surface of many cancer cells. They are mucin-like molecules with a molar mass of over 1000 kDa....
  
  , a type of protein

Government/political organizations

• Tactical Assault Group, an Australian counter-terrorism unit
• Tamils Against Genocide
  Tamils Against Genocide
  Tamils Against Genocide is a non-governmental organization formed in 2008, based in Columbia, Maryland, United States, which has actively protested the Sri Lankan Civil War and the alleged genocide of Sri Lankan Tamils in Northern Province, Sri Lanka...
  
  , a peace organization
• Treatment Action Group
  Treatment Action Group
  Treatment Action Group is a US-based HIV/AIDS activist organization formed in 1991 involved with worldwide efforts to increase research on treatments for HIV and for deadly co-infections that affect people with HIV, such as hepatitis C and tuberculosis...
  
  , an HIV/AIDS activist organization
• The German word for "day", found in the names of some German legislative bodies (such as Landtag
  Landtag
  A Landtag is a representative assembly or parliament in German-speaking countries with some legislative authority.- Name :...
  
  ), translating to English as Diet
  Diet (assembly)
  In politics, a diet is a formal deliberative assembly. The term is mainly used historically for the Imperial Diet, the general assembly of the Imperial Estates of the Holy Roman Empire, and for the legislative bodies of certain countries.-Etymology:...
  
  

Logistics

• Kimball tag
  Kimball tag
  A Kimball tag was a cardboard tag that included both human readable and perforations to support computer processing . A Kimball tag was an early form of stock control label that, like its later successor the barcode, supported back office data processing functions...
  
  , formerly used to identify products to a stock control system
• RFID tag, current stock control technology
• A label used in electronic article surveillance
  Electronic article surveillance
  Electronic article surveillance is a technological method for preventing shoplifting from retail stores or pilferage of books from libraries. Special tags are fixed to merchandise or books. These tags are removed or deactivated by the clerks when the item is properly bought or checked out...
  
   to prevent shoplifting

Other uses

• TAG Body Spray
  TAG Body Spray
  TAG Body Spray was manufactured by TAG Fragrance Company, a subsidiary of Procter & Gamble. It was first released in 2005. From 2005 to 2007, TAG Fragrance Company was part of Global Gillette, until Gillette was bought out by Procter & Gamble and dissolved. It was discontinued in October...
  
  
• TAG Group, a Luxembourgian private holding company
• Electronic tagging
  Electronic tagging
  Electronic tagging is a form of non-surreptitious surveillance consisting of an electronic device attached to a person or vehicle, especially certain criminals, allowing their whereabouts to be monitored. In general, devices locate themselves using GPS and report their position back to a control...
  
  , a form of non-surreptitious surveillance using a device attached to a person or vehicle
• Triage tag
  Triage tag
  A Triage Tag is a tool first responders and medical personnel use during a mass casualty incident. With the aide of the triage tags, the first-arriving personnel are able to effectively and efficiently distribute the limited resources and provide the necessary immediate care for the victims until...
  
  , a tool used to classify victims of mass casualty incidents
• Talal Abu-Ghazaleh Organization
  Talal Abu-Ghazaleh Organization
  The Talal Abu-Ghazaleh Organization , is an international holding company employing over 2,000 multi-disciplined professionals and operating out of 70 offices in the Middle East and North Africa, with representative offices in Europe, Asia and North America.The Organisation is a leading provider of...
  
  , an international holding company
• Tennessee, Alabama and Georgia Railway
  Tennessee, Alabama and Georgia Railway
  The Tennessee, Alabama and Georgia Railroad was created through a reorganization of the Chattanooga Southern Railway in 1911. A few years later, in 1922, the line's name was changed to the Tennessee, Alabama and Georgia Railway and was also known as the TAG Route. The TAG ran from Chattanooga,...
  
  
• The Theatre Arts Guild
  The Theatre Arts Guild
  The Theatre Arts Guild of Halifax, Nova Scotia, is Canada's oldest continuously operated community theatre. In 1931 the Little Theatre Movement and the Halifax Dramatic and Musical Club merged to found the TAG...
  
  , a community theatre
• Timneh African Grey, a parrot
• Topological abelian group
  Topological abelian group
  In mathematics, a topological abelian group, or TAG, is a topological group that is also an abelian group.That is, a TAG is both a group and a topological space, the group operations are continuous, and the group's binary operation is commutative....
  
  , a concept in mathematics
• Transcendental argument for the existence of God
  Transcendental argument for the existence of God
  The Transcendental Argument for the Existence of God is the argument that attempts to prove God's existence by arguing that logic, morals, and science ultimately presuppose a theistic worldview, and that God is the source of logic and morals...
  
  
• Transparent Armor Gun Shield
  Transparent Armor Gun Shield
  Built by BAE Systems, the Transparent Armor Gun shield, or TAGS, is a visually transparent protective gun shield for operators of vehicle-mounted machine guns. It borrows on the experience of the Israeli Defense Force in using such armor on a variety of vehicles. The shield is intended to provide...
  
  , an armor system
• Transportes Aéreos Guatemaltecos
  Transportes Aereos Guatemaltecos
  Transportes Aéreos Guatemaltecos is a private passenger and cargo airline based at Guatemala La Aurora International Airport. It was founded in 1969 in Guatemala City. In 1972 the airline added a Douglas DC-3 to its fleet, competing with the state-owned Aviateca.Today TAG has around 70 employees...
  
  , a Guatemalan airline

See also

• Tagger (disambiguation)
• Tagged, a social networking site
• Tagline
  Tagline
  A tagline is a variant of a branding slogan typically used in marketing materials and advertising. The idea behind the concept is to create a memorable phrase that will sum up the tone and premise of a brand or product , or to reinforce the audience's memory of a product...
  
  , a form of advertising slogan