| Abbreviation | Definition |
|---|---|
| ICFRE | Indian Council of Forestry Research Education |
| ICNF | Institute for the Conservation of Nature and Forest |
| IFACS | Indonesia Forest And Climate Support |
| IFACS | Indonesia Forestry and Climate Support |
| IFBP | Indigenous Forest Bioeconomy Program |
| IFCC | Indonesian Forestry Certification Cooperation |
| IFCC | Informal Family Child Care |
| IFDC | Illinois Forestry Development Council |
| IFEI | International Forest Engineering Institute |
| IFER | Integrated Forest Ecosystem Research |
| IFGTB | Institute for Forest Genetics and Tree Breeding |
| IFGTB | Institute of Forest Genetics and Tree Breeding |
| IFGTB | Institute of Forest Genetics Tree Breeding |
| IFIC | Indiana Forest Industry Council |
| IFIR | Idcinternational Forest Industry Roundtable |
| IFIR | International Forest Industry Roundtable |
| IFK | Indigenous Forest Knowledge |
| IFL | Intact Forest Landscapes |
| IFLP | Inlailawatash Forestry Limited Partnership |
| IFNM | Ironwood Forest National Monument |