G1, G01, G.I, G-1, or G One may refer to:
Science, technology, and mathematics
Astronomy Globular cluster Mayall II YGKOW G1, a giant elliptical galaxy that lensed the Twin Quasar G1 star, a subclass of G-class stars G1, a cloud that passed by Sagittarius A* around 2001–2002 g1, temporary designation of minor planet , a New Horizons flyby candidate
Biology and medicine G1, an informal group of fossil bird eggs from the Gobi desert that were later named Gobioolithus minor G1 phase, in the cellular cycle G1 regulatory sequence for the insulin gene Ganesha (psychedelic) (also known as G-1 or Ganesha-1), an amphetamine psychedelic ATC code G01 Gynecological antiinfectives and antiseptics, a subgroup of the Anatomical Therapeutic Chemical Classification System
Chemistry Group 1 of the periodic table, consisting of hydrogen and the alkali metals
Computing and electronics
Garbage-first collector, of the Oracle HotSpot Java virtual machine G1, in ISO 2022 character sets, one of 4 groups of characters that may be swapped into the encoding space via control codes Unitree G1, a humanoid robot from Unitree Robotics T-Mobile G1, the first publicly available Android smartphone
Cameras Contax G1, a Rangefinder camera made by Contax DSC-G1, a 2007 Sony Cyber-shot G series camera model PowerShot G1, a Canon camera Panasonic Lumix DMC-G1, a digital camera made by Panasonic
Mathematics g1, the start of a sequence of power towers such that g64 is Graham's number
Military Ordnance QF 25 pounder (South African Army designation: G1) G-1 (submarine), a class of early-20th century submarines constructed by the Lake Torpedo Boat Company of Bridgeport, Connecticut and purchased by the US Navy Char G1, a French tank G1, the designation used by the West German and Turkish armies for the FN FAL rifle G.I, a German designation for several World War I heavy bombers: AEG G.I Albatros G.I, a German aircraft whose development was the Albatros G.II 1916 aircraft Friedrichshafen G.I Gotha G.I Hansa-Brandenburg G.I, a 1916 bomber aircraft Fokker G.I, a 1937 Dutch heavy twin-engined fighter plane G-1 military flight jacket, a type of flight jacket Kampfgeschwader 55 (historic Geschwaderkennung code G1), with the Luftwaffe in World War II
Transportation G1 licence, the first tier in the graduated licensing programme for Ontario's new drivers G1 Aviation G1, French ultralight aircraft G1 Beijing–Harbin Expressway, in China Alfa Romeo G1, a 1921 Italian car Gorkha Airlines (IATA airline designator) One of the G-series Toronto subway cars SEPTA Route 15, All Stops service pattern labelled G1
Arts and media G1 (website), a Brazilian news portal owned by Grupo Globo G.One (character), the protagonist of 2011 super hero movie Ra.One Gangwon No.1 Broadcasting, a Seoul Broadcasting System television channel in Gangwon Province Godzilla Minus One, a 2023 kaiju film often abbreviated to G–1 Transformers: Generation 1, a toy line which ran from 1984 to 1992 The Transformers (TV series), an animated television series meant to promote the toy line (popularly referred to as Generation 1)
Other uses G1 Climax, an annual professional wrestling singles tournament held by New Japan Pro Wrestling G1 Group, a Scottish hospitality and leisure operator
See also Group 1 (disambiguation) 1G (disambiguation) G (disambiguation)
Gone (disambiguation)