| Abbreviation | Definition |
|---|---|
| HNF | HIPPI Network Forum |
| HRF | Humanitarian Response Forum |
| HSFN | Hindoe Studenten Forum Nederland |
| HTF | Home Theater Forum |
| HTF | Hotel Technology Forum |
| HUAC | House of Un American Activities |
| HWF | Hot Water Forum |
| IAF | International Affairs Forum |
| IAF | International Authors Forum |
| IATFF | Information Assurance Technical Framework Forum |
| IBF | International Book Forum |
| IBFR | International Blockchain Forum Rotkreuz |
| ICEF | Innovation for Cool Earth Forum |
| ICF | Intelligent Community Forum |
| IDDF | Israel Defense and Diplomacy Forum |
| IDMF | Irish Deer Managment Forum |
| IEBF | Inland Empire Bankruptcy Forum |
| IEF | IPC E Forum |
| IEFF | Israeli Executives and Founders forum |
| IEOF | Indonesia Economic Outlook Forum |