| Abbreviation | Definition |
|---|---|
| IFRAC | The Israel Fathers Rights Advocacy Council |
| IFRC | International Federation of Red Cross |
| IFSA | Islamic Forum for Science and Arts |
| IFSP | Individual Family Service Plan |
| IFSR | International Federation for Systems Research |
| IFSR | International Foundation For Survival Research |
| IFSSD | International Federation of Societies on Skeletal Diseases |
| IFSTA | International Fire Service Training Association |
| IFTA | Independent Film Television Alliance |
| IFTA | International Fuel Tax Association |
| IGLHRC | International Gay and Lesbian Human Rights Commission |
| IGRO | Irish Group Relations Organisation |
| IGTN | International Gender & Trade Network |
| IGTN | International Gender and Trade Network |
| IGWG | Interagency Gender Working Group |
| IHAD | I Have A Dream Foundation |
| IHADF | I Have A Dream Foundation |
| IHC | Ice Hockey Club |
| IHD | International Hearing Dog |
| IHDI | International Hearing Dog, Inc. |