| Acronym | Definition |
|---|
| IFMS | Interagency Fleet Management System |
| IFMS | Integrated Financial Management System |
| IFMS | International Federation of Mountain Soldiers |
| IFMS | Institute for Frontier Medical Sciences (Kyoto University; Japan) |
| IFMS | Interoperable Fare Management System |
| IFMS | Integrated Facility Management System (various organizations) |
| IFMS | Integrated Financial and Material System (Canada) |
| IFMS | Intermediate Frequency and Modem System |
| IFMS | Integrated Fire Management System |
| IFMS | Integrated Fault Management System |
| IFMS | Inter-Agency Fleet Management System |
| IFMS | In-Flight Maintenance Spare |
| IFMS | Imformation Flow Management System |