IGA or IgA may refer to:
Businesses and organizations
- IGA (supermarkets) (initially Independent Grocers Alliance), a name used by many independent supermarkets throughout the world
- IGA (Australian supermarket group), the local Australian variant of the international IGA
- International Island Games Association, an organization that organizes the Island Games (a friendly competition between teams from several islands and other small territories)
- International Grenfell Association, an organization providing health care, education, religious and other services to the fishermen and coastal communities in Newfoundland and Labrador
- Interscope-Geffen-A&M, an American record label
- Irish Games Association, a non-profit body which is dedicated to promoting gaming in Ireland
- International Gay Association, the original name of the International Lesbian, Gay, Bisexual, Trans and Intersex Association
In government
In science and technology
- Immunoglobulin A (IgA), an antibody playing a critical role in mucosal immunity
- Intergranular attack, another term for intergranular corrosion (a form of corrosion where the boundaries of crystallites of the material are more susceptible to corrosion than their insides)
Other uses
- Identity Governance and Administration, the organisational policies, processes and procedures controlling identity management
- In-game advertising, the use of computer and video games as a medium in which to deliver advertising
- International Gamers Award, an award for strategy board games and historical simulation games
- Islamic Golden Age, a period in the history of the Muslim world
- Koji Igarashi, a Japanese video game producer, nicknamed IGA
See also
- Iga (disambiguation)