G3

G3, G03, G.III, G.3 or G-3 may refer to:

Politics

 * G-3 (Europe), the top three economies in the European Union
 * G-3 (Latin America), the grouping of Colombia, Mexico and Venezuela
 * G-3, a trio of countries consisting of U.S., China and India, first proposed by chief of world economic forum, deeming these countries to be core economic and geopolitical players in this century.

Military

 * AEG G.III, a German World War I heavy bomber
 * Albatros G.III, a 1916 German bomber aircraft
 * Caudron G.3, a 1913 French single-engined biplane
 * Friedrichshafen G.III, a 1915 German medium bomber
 * G-3 U. S. Army Operations (military staff)
 * G3 battlecruiser, a post First World War design for the Royal Navy that was curtailed by the Washington Naval Treaty
 * G3 (NATO), the Assistant Chief Of Staff or senior staff officer on Operations and Plans at the division level and higher
 * Gotha G.III, a 1916 German heavy bomber
 * Heckler & Koch G3, a battle rifle produced by Heckler & Koch
 * Soko G-3, improved variant of Soko G-2 airplane
 * USS G-3 (SS-31), an early U.S. Navy submarine
 * Group of Three, a group dispatched to Lebanon in 1958, shortly before the 1958 Lebanon crisis

Electronics

 * Canon PowerShot G3, a digital camera made by Canon
 * G3 power state, in computer ACPI power states
 * G3, a fax encoding format
 * G3, a PBX from the Avaya Definity range
 * Gibson G3, a 1975 bass guitar
 * iAudio G3, an mp3 player from the Cowon iAudio range
 * Panasonic Lumix DMC-G3, a digital interchangeable lens camera made by Panasonic
 * PowerPC G3, a microprocessor branding used by Apple Computer
 * LG G3, an Android smartphone developed by LG Electronics
 * G3 gaming laptops series from Dell

Media

 * g3 (British magazine), a UK magazine aimed at lesbian and bisexual women
 * G3 (tour), a live music show and guitar tour organized by Joe Satriani and Steve Vai
 * G3: Genes, Genomes, Genetics, a scientific journal in the discipline of genetics, published by the Genetics Society of America
 * GIII, the alternative title for the third and final film in the Gamera heisei trilogy.

Science

 * ATC code G03 Sex hormones and modulators of the genital system, subgroup of the Anatomical Therapeutic Chemical Classification System
 * G3 star, a subclass of G-class stars in stellar classification
 * Group 3 element of the periodic table
 * G3 medium in embryo culture

Transportation

 * Galactic 03 (G03), a suborbital tourist spaceflight on 8 September 2023

Air transportation

 * City Connexion Airlines, a former Burundian airline, IATA designation G3
 * Gol Transportes Aéreos, a Brazilian economy airline, IATA designation G3
 * Gulfstream III, an American business jet, sometimes abbreviated GIII

Automobiles

 * BYD G3, a 2009–2014 Chinese compact sedan
 * Enranger G3, a 2014–present Chinese subcompact SUV
 * Pontiac G3, a 2008–2010 American subcompact car
 * XPeng G3, a 2018–present Chinese compact electric SUV

Rail transportation

 * Gaiemmae Station, station G-03 of the Tokyo Metro Ginza Line
 * PRR G3, an American PRR 4-6-0 locomotive
 * WLWR Class G3, a Waterford, Limerick and Western Railway Irish steam locomotive
 * LNER Class G3, a class of British steam locomotives

Roads and routes

 * G3 Beijing–Taipei Expressway, incomplete expressway intended to link mainland China and Taiwan

Watercraft

 * G3 boats, from Yamaha Motor Corporation

Other

 * Kamen Rider G3, a fictional character featured in Kamen Rider Agito
 * G3 (company), or "Good Governance Group", British corporate security and intelligence company
 * G3 Ministries, Christian organization
 * G-3 visa, a type of non-immigrant visa allowing travel to the United States
 * G-III Apparel Group, a clothing manufacturing company
 * G3 Canada, a Canadian grain company and successor to the Canadian Wheat Board