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 * Indian Gaming Association, a nonprofit organization for Native American gaming interests founded in 1986 * 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 *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) * IGA - Identity Governance and Administration - IGA IT Solutions are used to manage identities, user accounts, access rights, roles, policies, and the related governing processes - see for example how Gartner is defining IGA (https://www.gartner.com/reviews/market/identity-governance-administration).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 *See also
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