IG, Ig, or ig may refer to:
Companies IG Farben, a former German industrial conglomerate IG Group, a UK financial services company IG Recordings, a record label formed by the Indigo Girls, an American folk/rock duo Production I.G, a Japanese anime company Impressions Games, a defunct United States gaming company Internet Group, stylized as "iG", a Brazilian internet service provider Invictus Games (company), a Hungarian video game developer Air Italy (2018–2020) (former IATA code: IG), a former Italian airline
Games Imperial Guard (Warhammer 40,000), from the tabletop strategy game Warhammer 40,000 Imperium Galactica, a 1997 PC CD-ROM game by Hungary-based Digital Reality Insomniac Games, an independent video game developer Invictus Gaming, a Chinese professional E-sports team Invictus Games, Paralympic sporting event Invictus Games (company), Hungarian video game developer
Government Inspector General, a high-ranking official Inspector General of Police Inspector General of Prisons Interim Government of Ambazonia Irish Guards, a Foot Guards regiment of the British Army
Places Ig, Slovenia IG postcode area, a group of postcode districts around Ilford, England
Science and technology Immunoglobulin, also known as antibody, a protein used by the immune system to identify and neutralize foreign objects such as bacteria and viruses Imperial gallon (ig), an Imperial unit of volume defined as Insulated glazing, double or triple glass window panes separated by an air or other gas-filled space to reduce heat transfer Integrated graphics, the term for a graphics processor that is integrated into the mainboard
Other uses Ig Nobel Prize, a parody of the Nobel Prize (ignoble) Igbo language, the official language of Nigeria, by ISO 639-1 language code Information governance, the management of information at an organisation Inscriptiones Graecae (IG), a collection of ancient Greek inscriptions The IG-series, a series of combat droids in the Star Wars universe Instagram, a social media application Investment-grade bond or debt Island Games, international sports tournament Italian Greyhound, a breed of dog Injustice Guild, the villainous counterpart to the Justice Guild of America Inspector Gadget, an animated media franchise