| IFOA | Idaho Forest Owners Association 
| Others |
| IFOA | Independent Firearm Owners Association
| Others |
| IFOA | Indiana Football Officials Association
| Others |
| IFOA | Inland Football Officials Association
| Others |
| IFOA | Institute and Faculty of Actuaries
| Others |
| IFOA | Integrated Forestry Operations Approval
| Others |
| IFOA | Integrated Forestry Operations Approvals
| Others |
| IFOA | Integrated Form of Agreement
| Others |
| IFOA | International Family Office Association
| Others |
| IFOA | International Festival Of Authors
| Others |
| IFOA | International Forward Osmosis Association
| Others |
| IFOA | Istituto Formazione Operatori Aziendali
| Others |