| Acronym | Definition |
|---|
| IESA➣Instituto de Estudios Superiores de Administración (Spanish: Institute of Higher Administration Studies; Venezuela) |
| IESA➣Infogrames Entertainment SA |
| IESA➣Interoperability for Enterprise Software and Applications (conference) |
| IESA➣Indiana Education Savings Authority (Indianapolis, IN) |
| IESA➣Institution of Engineers Singapore (est. 1966) |
| IESA➣International Executive Security Association |
| IESA➣Illinois Elementary Sports Association |
| IESA➣Integrated Equiangular Spiral Antenna |