| Abbreviation | Definition |
|---|---|
| HLCT | Hingham Land Conservation Trust |
| HOCI | Habitats of Conservation Interest |
| HPCS | Historic Plaster Conservation Services |
| HVCS | Hudson Valley Conservation Strategy |
| HYCC | Hawaii Youth Conservation Corps |
| IBCC | International Boreal Conservation Campaign |
| IBCP | Idaho Bird Conservation Partnership |
| IBCP | International Bird Conservation Partnership |
| ICAA | Initiative for Conservation in the Andean Amazon |
| ICCM | International Committee for the Conservation of Mosaics |
| ICI | Industrial Conservation Initiative |
| ICL | Idaho Conservation League |
| ICR | Integrated Conservation |
| ICR | Integrated Conservation Resources |
| IDK | I Dont Know |
| IECM | Interleaving Energy Conservation Mode |
| IFCA | Inshore Fisheries and Conservation Authorities |
| IIHC | Indian Institute of Heritage and Conservation |
| ILSCF | Iowa Lions Sight Conservation Foundation |
| IMCC | International Marine Conservation Congress |