Editing G4 (section)

==Electrics, electronics, and computing==
* G4, a type of [[bi-pin lamp base]] (socket), a lamp fitting where the pin spacing is 4mm
* [[LG G4]] smartphone
* [[Moto G4]], a line of smartphones
* [[Group 4 compression]], a type of image compression used in fax machines and some image file formats

===Apple Computer===
* [[PowerPC G4]], a type of microprocessor by Freescale used by Apple
** [[Power Mac G4]], a series of personal computers made by Apple Inc in July 1999
** [[PowerBook G4]], a series of Professional notebooks made by Apple Inc in 2001
** [[iMac G4]], a series of personal computer made by Apple Inc in January 2002
** Xserve G4, an [[Xserve#Xserve G4|Xserve]] server made by Apple Inc in May 2002
** iBook G4, an [[iBook#iBook G4|iBook]] series of consumer notebooks in October 2003
** Mac Mini G4, a [[Mac Mini#First generation (G4 Polycarbonate)|Mac Mini]] series of ultracompact computer in January 2005

===Science and medicine===
* G-4 (Ganesha-4), an amphetamine psychoactive drug and derivative of the psychedelic [[Ganesha (psychedelic)#G-4|Ganesha]]