| IFCS | Improved Fire Control System 
| Others |
| IFCS | Independent Foster Care Services
| Others |
| IFCS | Institute of Foreign Credential Services
| Others |
| IFCS | Insurance Federal Claims Services
| Others |
| IFCS | Insurance For College Students
| Others |
| IFCS | Integrated Family Community Services
| Others |
| IFCS | Intelligent flight control system
| Others |
| IFCS | Intergovernmental Forum on Chemical Safety
| Others |
| IFCS | International Federation of Chopin Societies
| Others |
| IFCS | International Federation of Classification Societies
| Others |
| IFCS | International Frequency Control Symposium
| Others |