| International Water Institute
|
| Interstate Commission on the Potomac River Basin
|
| Inuit Circumpolar Council
|
| Inuit Knowledge Centre
|
| Inuit Tapiriit Kanatami
|
| Iowa Flood Center
|
| Iowa Institute of Hydraulics Research
|
| Iowa State University
|
| Iowa State University | College of Agriculture and Life Sciences
|
| Iowa State University | Department of Agronomy
|
| Iowa Water Center
|
| Island Press
|
| iTree Tools
|
| Jacques Cousteau National Estuarine Research Reserve
|
| James City County Virginia
|
| James Cook University
|
| Jamestown S'Klallam Tribe
|
| JetBlue for Good
|
| Jobos Bay National Estuarine Research Reserve
|
| Kachemak Bay National Estuarine Research Reserve
|
| Kake Tribal Corporation
|
| Kako‘o ‘Ōiwi
|
| Karuk – UC Berkeley Collaborative
|
| Karuk Tribe
|
| Kawerak, Inc.
|
