| Acronym | Definition |
|---|
| ILSA | International Law Students Association |
| ILSA | International Lung Sounds Association |
| ILSA | Irish Learning Support Association |
| ILSA | Iran-Libya Sanctions Act of 1996 |
| ILSA | Interstate Labor Standards Association |
| ILSA | Insegnanti Italiano Lingua Seconda Associati |
| ILSA | In Line Skating Academy (Greece) |
| ILSA | Insurance Licensing Services of America (Groesbeck, TX) |
| ILSA | Indiana Legislative Services Agency |
| ILSA | Irvine Linguistics Students Association |
| ILSA | International Lutheran Single Adults |
| ILSA | Independent Liverpool Supporters Association (United Kingdom) |
| ILSA | Instituto de Lengua de Señas Argentina |
| ILSA | Instituto Latinamericano de Servicios Legales Alternativos (Spanish: Latin-American Institute for Alternative Legal Services) |
| ILSA | Indigenous Law Student Association |
| ILSA | Industry Large-Structures Assembly |
| ILSA | Independent Life Style Assistant |
| ILSA | Independent Lifestyle Association, Inc. |
| ILSA | Integrated Logistics Support Agent |
| ILSA | Improved Lightweight Satellite Antenna |
| ILSA | Integrated Logistics Support Analysis |
| ILSA | International Longboard Skateboard Association |