GI or Gi may refer to:

Military

G.I. G.I. are initials used to describe the soldiers of the United States Army and airmen of the United States Air Force and general items of their equipment. The term G.I. has been used as an initialism of "Government Issue", "General Issue", or " ...

, a nickname (from galvanized iron) for U.S. Army soldiers

Arts and entertainment

* ''GI'' (album), an album by the Germs * Gi (Captain Planet character) * ''

Game Informer ''Game Informer'' (''GI'', most often stylized ''gameinformer'' from the 2010s onward) is an American monthly video game magazine featuring articles, news, strategy, and reviews of video games and associated consoles. It debuted in August 1991 w ...

'', a magazine *

Global Icon (band) Global Icon (Hangul: 지아이; acronym An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in ''NATO'' (''North Atlantic Treaty Org ...

, a South Korean group

Organisations

Goethe-Institut The Goethe-Institut (, GI, en, Goethe Institute) is a non-profit German cultural association operational worldwide with 159 institutes, promoting the study of the German language abroad and encouraging international cultural exchange and ...

, a German cultural association * General Instrument, an electronics company *

Gesellschaft für Informatik The German Informatics Society (GI) (german: Gesellschaft für Informatik) is a German professional society for computer science, with around 20,000 personal and 250 corporate members. It is the biggest organized representation of its kind in the ...

, a German computer society *

Itek Air Itek Air, Ltd (russian: ООО Авиакомпания «ИТЕК-ЭЙР») was an airline based in Bishkek (Manas International Airport) in Kyrgyzstan. Destinations As of October 2008, Itek Air operated scheduled passenger flights to the foll ...

(IATA airline designator), a former airline based in Kyrgyzstan *

Guaranteed Irish Guaranteed Irish is an Irish nonprofit business membership organisation representing indigenous and international businesses operating in Ireland. The Guaranteed Irish symbol is awarded to companies which create "quality" jobs, contribute to l ...

, a business membership network

Science and technology

* GI, a complexity class in the graph isomorphism problem * Galvanized iron

Biology and medicine

* G_i alpha subunit, a protein *

Gastrointestinal tract The gastrointestinal tract (GI tract, digestive tract, alimentary canal) is the tract or passageway of the digestive system that leads from the mouth to the anus. The GI tract contains all the major organ (biology), organs of the digestive syste ...

(GI tract) * Gigantocellular reticular nucleus, a subregion of the medullary reticular formation *

Glycemic index The glycemic (glycaemic) index (GI; ) is a number from 0 to 100 assigned to a food, with pure glucose arbitrarily given the value of 100, which represents the relative rise in the blood glucose level two hours after consuming that food. The GI of ...

, measuring a food's effect on blood glucose

Computing

.gi .gi is the country code top-level domain A country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ...

, the country code top-level domain for Gibraltar *

Gi (prefix symbol) A binary prefix is a unit prefix for multiples of units. It is most often used in data processing, data transmission, and digital information, principally in association with the bit and the byte, to indicate multiplication by a power of& ...

(gibi), a binary prefix *

Global illumination Global illumination (GI), or indirect illumination, is a group of algorithms used in 3D computer graphics that are meant to add more realistic lighting to 3D scenes. Such algorithms take into account not only the light that comes directly from ...

, a group of 3D graphics algorithms

Other uses

Gibraltar ) , anthem = " God Save the King" , song = " Gibraltar Anthem" , image_map = Gibraltar location in Europe.svg , map_alt = Location of Gibraltar in Europe , map_caption = United Kingdom shown in pale green , mapsize = , image_map2 = Gib ...

(ISO 3166-1 country code) *

G.I. Generation G.I. are initials used to describe the soldiers of the United States Army and airmen of the United States Air Force and general items of their equipment. The term G.I. has been used as an initialism of "Government Issue", "General Issue", or ...

, a demographic cohort * Graphics Interface, a conference on computer graphics and human–computer interaction *

Geographical indication A geographical indication (GI) is a name or sign used on products which corresponds to a specific geographical location or origin (e.g., a town, region, or country). The use of a geographical indication, as an indication of the product's source, ...

, on products which corresponds to a geographical location or origin * Gi (kana), a syllabic character in Japanese script * Gi (cuneiform), a sign in cuneiform writing *

Greg Inglis Gregory Paul Inglis (born 15 January 1987), also known by the nickname of "G.I.", is a retired Australian professional rugby league footballer. His regular playing positions were Centre, Fullback, Five-eighth and Wing. From 2011 to 2019 he pl ...

(born 1987), Australian rugby league footballer * Keikogi, a Japanese martial arts uniform known in English simply as a ''gi''. *Gi, a character from Captain Planet and the Planeteers