IGA

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

 * Illinois General Assembly
 * Indiana General Assembly
 * Iowa General Assembly

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