| Acronym | Definition |
|---|
| FIIS➣Fire Island National Seashore (US National Park Service) |
| FIIS➣Foreign Institutional Investor |
| FIIS➣Fidelity Investments Institutional Services (Fidelity Investments Institutional Operations Company, Inc.) |
| FIIS➣Farm Income Insurance Scheme (Department of Agriculture & Cooperation; India) |
| FIIS➣Fitzroy Industry and Infrastructure Study (Fitzroy- Rockhampton, Australia) |