| Acronym | Definition |
|---|
| IgA➣Immunoglobulin A (antibody) |
| IgA➣Intergovernmental Agreement |
| IgA➣Independent Glass Association |
| IgA➣Interactive Gambling Act (est. 2001) |
| IgA➣International Glaucoma Association |
| IgA➣International Geothermal Association |
| IgA➣International Goat Association (Little Rock, Arkansas) |
| IgA➣Indiana Golf Association |
| IgA➣Income Generating Activity |
| IgA➣Inagua, Bahamas (Airport Code) |
| IgA➣Independent Grocers Alliance |
| IgA➣Investigator's Global Assessment |
| IgA➣Interested Government Agency |
| IgA➣Intergranular Attack |
| IgA➣Independent Grocers Association |
| IgA➣Inside Global Address (computing) |
| IgA➣Institute of Group Analysis |
| IgA➣Inspector General Act of 1978 |
| IgA➣In-Game Advertisement |
| IgA➣Independent Grocers of Australia (Australia) |
| IgA➣International Island Games Association |
| IgA➣Inner Gimbal Angle (US NASA) |
| IgA➣Idaho Golf Association |
| IgA➣Interactive Genetic Algorithm (interactive evolutionary computation) |
| IgA➣Illicit Gains Authority (legal entity, Egypt) |
| IgA➣International Gay Association (now International Lesbian and Gay Association) |
| IgA➣Integrated Graphics Array |
| IgA➣Improved Gaussian Approximation |
| IgA➣Illumina Genome Analyzer (genomics) |
| IgA➣Indonesian Gas Association (Jakarta, Indonesia) |
| IgA➣Instituto Guatemalteco Américano (Spanish: Guatemalan American Institute) |
| IgA➣Institute for Gulf Affairs |
| IgA➣International Governmental Agreement |
| IgA➣Independent General Agent (insurance) |
| IgA➣Integrating Gyro Accelerometer |
| IgA➣Interleaver Growth Algorithm |
| IgA➣Inhaled Gas Analyzer |
| IgA➣International Graduate Achievement |
| IgA➣Inhomogeneous Green's Function Approach |
| IgA➣International Growers Association |