GI

GI (G.I.), Gi or gi may refer to:

Entertainment

* "Game Informer" - a video game magazine
* Gi (Captain Planet character) - a character in the television series "Captain Planet and the Planeteers"
* G.I. Joe - a toy soldier series manufactured by Hasbro
* G.I. (comics) - a reference to Genetic Infantryman in the "Rogue Trooper" fictional universe

cience and measurement

* Galvanized iron - iron that has been electrochemically rustproofed with zinc
* Gastrointestinal - a division of the human anatomy in medicine
* GenInfo Identifier - a database key in the NCBI's Genbank database
* "Geodætisk Institut" - a former Danish cartographic institute
* Geographical indication
* Geophysical Institute - a research institution at the University of Alaska Fairbanks
* GI (complexity) - complexity class of the Graph Isomorphism Problem
* Gill - a U.S. unit of volume equal to 4 U.S. fluid ounces and an Imperial unit equal to 5 imperial fluid ounces
* Global illumination - the rendering of light in 3D computer graphics scenes
* Glycemic index - a ranking system for carbohydrates based on their effect on blood glucose levels
* Granuloma inguinale - an alternate name for donovanosis, a bacterial infection
* Graph isomorphism problem and the complexity class of problems reducible to it
* Gibi or Gi - the IEEE prefix that represents 2³⁰
* Gilbert (Gb or Gi) - a former CGS unit of magnetomotive force or magnetic potential

port and martial arts

* Keikogi or dogi - the traditional training uniform, originating worn in Japanese martial arts include .
**Judogi
**Aikidogi
**Karategi
**Jujutsugi etc
* Group I (also written Grade I or Group 1) - in horse racing, younger horses generally represented by the lower number. Listings 1-3 usually Roman numerals.

Music

* (GI) - an album by The Germs
* Garage Inc, album by thrash metal band, Metallica
* Government Issue - a 1980s DC Hardcore Punk band

Places

* Gary, Indiana - a city in Northwest Indiana
* Grand Island, Nebraska - an American city
* Green Island, New Zealand - a town in New Zealand's South Island
* .gi - Gibraltar's country code top-level domain
* Gibraltar

Other

* GI (military) or G.I. - a nickname for a United States Army soldier
* Gi - an alternative name for Chaac, a Mayan god
* General Instrument - an electronics company
* Itek Air - IATA airline designator
* Goethe-Institut - the German cultural affairs body