| Acronym | Definition |
|---|
| IFSS➣Infamous: Second Son (gaming) |
| IFSS➣International Film School Sydney (Australia) |
| IFSS➣International Flight Service Station |
| IFSS➣Integrated Future Solutions Systems (Saudi Arabia) |
| IFSS➣Institute for Food Safety and Security (Iowa State University) |
| IFSS➣International Federation of Shock Societies |
| IFSS➣International Federation of Sleddog Sports, Inc. |
| IFSS➣Interference-Free Signal Subspace |